I consider it a feature, in that if a new (1-rep) user posts a good question/answer, I can downvote, immediately cancel it, and then upvote in order to give him an extra 2 points. Call it a welcoming gift. Might not seem like much, but every little bit helps when you're just starting out.
Anyway, if a question is really bad, it will receive enough downvotes to knock it off the front page, and if it's really really bad then it will get closed or flagged to oblivion, which is really a lot more important than the user's rep from a few stray upvotes.
This really all boils down to the so-called "sympathy vote" problem which, IMHO, doesn't really exist, insofar as there are plenty of terrible questions/answers with zero or positive scores that also receive undeserved upvotes. (In other words, it's only called a "sympathy upvote" because it happens after a downvote, when it may very well have happened anyway, downvote or not).