Nope. Same reason I don't own guns - I don't think it should be easy to kill another person, and I don't think those tools should be used by the general population. Now, of course there are people I'd desperately like to bring back to life, but I think that a bad idea, too. We live linearly in time, and to mess with that seems a bad idea.
I like guns. I have a bunch of them.
I am undecided as yet. But like anything, power corrupts. In the long run I think things would get distorted and out of shape so the whole responsible thing is a mess. Plus I believe it is a power that human beings don't have the proper capacity to use. Even if we think we do.