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I definitely always prefer games where the rollback feature is available at all times. I typically won't use it when first going through a game, but it makes the content much more replayable, by allowing you to customize your experience each time you go back through.

Rerolling skill checks will always happen. You just abuse quick save/load at choices instead of rollback. Personally I like to see what I actually do/say when I pick an option as somtimes what comes out of the MC isn't what I was going for so I'll rewind. IMO it's just better to let a player who wants to roll back have a better experience since it doesn't negatively impact anybody who doesn't want to use it.