This comes down to a matter of personal taste. Failing a persuasion or perception check is a hallmark of D&D, and the fact that Larian made the game work whether you pass or fail is astounding to me. Failure forces players to find other, more creative options, to problem solve. To me, this is where the game will shine, so I will not be save scumming.
If, however, save scumming is your thing, more power to you. As Sordak said, it's not an MMO. You're not killing anyone else's enjoyment by save scumming.
