It does not make sense for the Resurrection not to have happened.
There's lots of reasons why. I'm going to stick with just the witness argument: how else can a reasonable historian explain why hundreds of backwoods peasants traveled thousands of miles to give testimony on pain of humiliating and painful death, except that they had really seen a dead body come to life in a glorified way? Even more convincing for me is that these witnesses, with no textual, physical, or authoritative evidence but their own word, managed to convince peoples throughout the Ancient Mediterranean, just by their own testimony. Before the Gospels were written, philosophers and slaves and merchants and military believed that the God of all creation - the only god, mind you - came as a human being to... What? Get nailed naked to wood as a disgusting billboard of brutal Imperial violence? What a ridiculous story! Imagine hearing it for the first time, maybe having seen crucified bodies on your way into town. What could have possibly convinced you that it were true, to such a point that you'd die rather than deny it?
Con men would have sold out; 'elevated consciousness' would have given outward signs of obedience while remaining mentally reserved; and madmen simply could not have sustained the organizational effort needed for the growth the Church experienced.
What explanation is more reasonable than the Resurrection, exactly as written? What would drive these witnesses to preach, to gather, to endure and to die, unless they had seen a crucified body glorified and interacted with this unprecedented kind of human? What would be a more likely explanation, yet just as motivating, than sharing a meal with a man once dead and buried? Than placing your finger into a living, beating heart that was still stabbed in half? Than having your locked and secured room invaded with a casual, "Do not be afraid,"?
I've wracked my brain, but I cannot think of anything else that would explain the behavior of Christ's disciples after his death. Nothing else has so consistently, unpredictably, and powerfully impacted human history. So why would we reasonably expect anything other than an event that defies what we think we understand about life?
If it is true, if Christ did rise from the dead, then what the hell am I doing droning on in a daze, grinding from unconscious work to unconscious pleasure? What am I doing retreating into self-induced isolation and experience carefully restricted to self-centeredness? What am I doing wallpapering the thin veneer of what I believe others think looks like success and acceptance? For what? To make this life easier, smoother, less bumps and jostles? What is it that I'm trying to protect by doubting the Resurrection, and how fragile is it? It can be nothing else but the conviction that I already understand the universe better than anyone ever possibly could.
I've been surprised enough in my life by hope and redemption to allow that I might be definitively surprised in the last thing.