Well, yes, obviously it's "easier" to litigate when you give yourself less legal standing to file suit, but that's a rather meaningless comparison. By that logi

Well, yes, obviously it's "easier" to litigate when you give yourself less legal standing to file suit, but that's a rather meaningless comparison. By that logic CC0, is the easiest to litigate, because you've given up all your rights as the license holder. That only makes sense if you place literally zero value on the rights that the license provides. It's only relevant to compare how easily enforceable two licenses are when the rights they provide are comparable (e.g., GPL and MPL, or 3-clause BSD and MIT). The whole point of choosing the GPL over BSD/MIT is choosing a copyleft license. If all you care about is ensuring that the recipient is legally granted the rights provided by the BSD/MIT license, then the question of how "easy" it is for the license holder to litigate isn't relevant. OP's argument was that it would be too much mental effort to enforce the GPL, though that's not really an argument for not choosing the GPL, because simply holding the license doesn't mean he has to enforce it. If OP actually doesn't want the copyleft provisions, then obviously he shouldn't choose the GPL. But if that's something that he does care about, there's not really any downside to selecting the GPL, and no upside to selecting a non-copyleft license.