> I trust the FSF not to do something sufficiently crazy
Personally, I don't trust this at all, and would recommend against the "or later" that yields future licensing decisions to the Richard Stallman and that FSF.
not speaking for OP, but the significant changes between GPL v2 and GPL v3 would make me absolutely paranoid, and represent a good example. A "v2-and-later" would have subjected people to licensing changes they absolutely don't want.
Personally, I don't trust this at all, and would recommend against the "or later" that yields future licensing decisions to the Richard Stallman and that FSF.