J.R.D. Kirk summed up my own feelings on the matter in the space of one Tweet:

Each item of “evidence” that we present can go either way. We can appeal to an empty tomb. They can say the body was stolen. We can appeal to post-resurrection appearances. They can say these are hallucinations. The evidence can only go so far. When it is all said and done we either believe that Peter, James, Paul, and others when they say they saw Jesus resurrected from the dead or we can discount them for a variety of reasons.

I have no reason to believe they lied.