I have a fairly dark, ironic, satirical sense of humor also. However, that doesn't mean that everybody else does (although they should
).
Not sure if you picked up on this or not (I assume you did, but just in case), but my point wasn't that the inclusion of humor into the game should be optional (edited: optional for the devs) - I think every game should make some sort of stab at humor - but rather that the player should have a fairly easy opportunity to "opt out" of the humor if they want to, so that it doesn't ruin the rest of the game for them. Otherwise, the player may end up choosing to "opt out" of the game entirely if they don't get the humor.
I doubt Bethesda will have much trouble coming up with some good humor for the game though, so this is probably a moot point anyways.