Short Answer

If Post Modernism makes sense, then it makes sense to believe in the Easter Bunny.  Consider the following humor:

Detailed Answer

Now, under post-modernism and chaos theory, it is said that nothing can be proven for certain. At the same time, given infinite time and space, anything is possible-nothing is impossible. As we acquire knowledge through observation, something may become very probable or very improbable--but never impossible. All is relative say the intellectuals. The only thing that is absolute is that nothing is absolute.

If these folks are right, then there is no right and wrong, no black and white-only shades of gray, which must be a great comfort for those faced with conclusions they are trying to avoid. And the grays are only defined by who wins. The only thing that is wrong is to think that there is such a thing as right and wrong. Who could argue with the level of authority that the intellectuals possess?!! They must be right.

Now that we know how things really are, we can boldly state that both evolution and the Easter Bunny are viable theories. (Please don't think that I am trivializing EasterBunnyism by comparing it to evolutionism. If all is relative, then we have no right to take a negative attitude toward the theory of evolution.)

Observation cannot disprove the theory that the Easter Bunny comes to every home every year and distributes colored eggs and candy; it can only make it improbable. As we calculate the number of homes on the earth and the amount of time available to the Easter Bunny in one night, the hypothesis becomes more improbable, but certainly not impossible. When we get older and, by observation, notice that we are putting the eggs out for our own children and that no Easter Bunny helps us, the hypothesis becomes more improbable, but not impossible.

Conflicting data can only make the Hypothesis improbable. It cannot disprove the hypothesis because everything, given infinite time and space, is possible. The hypothesis of the Easter Bunny coming every year and depositing eggs in every home is, of course, simply a working tool for the scientist, a working tool, just like evolutionism.

Another hypothesis, which cannot be proven false by scientific means, is the hypothesis of Biblical error. Even though none of the disciplines of science (astronomy, physics, chemistry, archaeology, statistics, biology, paleontology, cosmology, history, etc.) have uncovered any evidence that proves the existence of error in any part of the Bible, we can't say that scientifically there are no errors in the Bible. Since anything is possible, there may be errors. Indeed, from time to time scientists have jumped to conclusions a bit too quickly and were a bit too certain of information, which they had thought disproved some part of the Bible. In some cases they have admitted their errors after they were brought to light. In many cases they did not. Though there is no evidence to support it and a great deal of evidence to refute it, the hypothesis of Biblical error is not impossible. It is merely highly improbable-just as EasterBunnyism is merely highly improbable.

Even though there is no evidence from any scientific discipline to indicate that the universe was not created in six twenty-four hour days, as the Bible seems to indicate, we can't prove that the earth was created in six days. All we can scientifically prove is that, since no actual observation conflicts with this data, a six-day creation is not statistically improbable.

On the other hand

On the other hand, there is a discipline that allows us to know many things that science cannot teach us. This is the discipline of the Spirit where the Spirit of God reveals what can be known. Knowledge, in this discipline, is not obtained by human effort. God determines what will be revealed and to whom. All the recipient of this revelation can do is to accept (or reject) the revelation. In this discipline, a sincere submission to the Spirit of God creates a situation where God is able to reveal Biblical truth. This is not to be confused with theology which is based on human effort: rational-lie-zed speculation, materialism and perhaps some scientific method. When the theological discipline is mixed with the spiritual discipline, the result can be compared with mixing pure water with sewage.

Revelation is based on God's effort and God's method. Unlike all the hypotheses of the scientific discipline, the conclusions of the Spiritual discipline are absolute. The spiritual discipline is an ever deepening relationship between the Sender and receiver of knowledge, wisdom, revelation, faith, hope, power, joy, peace, healing, miracles, and love. The spiritual discipline provides greater understanding of the material, rational and spiritual realms.

Hypothesis is speculative. In the pseudo-scientific discipline, speculation is encouraged. Speculation is also encouraged in the theological discipline. In the spiritual discipline, speculation is absolutely not part of the process. A 99% accuracy record is not sufficient in the Spirit's realm. For instance, In ancient Israel any prophet who prophesied anything that didn't materialize was not to be respected, because that prophet had then been shown to be a speculator.

By the way, at the risk of being called an absolutist, I will admit that I personally don't see much credence in EasterBunnyism-just like I don't buy into revisionist history, evolution, materialism, naturalism or uniformitarianism.

Summary

If Post Modernism, Chaos Theory, and Evolution make sense, then it makes sense to believe in the Easter Bunny.

It's not really surprising.  "because the carnal mind is enmity against God, for it is not subject to the Law of God, neither indeed can it be." Rom 8:7