I never vote down on subject matter as this is a matter of freedom of choice for the writer--even if I disagree such as political or religious type hubs. If there is a lot of profanity or the grammar is so poor, spelling bad, etc. I will vote it down or flag for review.
It isn't a matter of snobbery for me - it is a matter of wanting Hubpages to keep a good reputation for good writing and articles. I keep thinking of someone googling a subject and coming up with a subpar article with spelling error etc...and then the "googler" suddenly thinks Hubpages has poor articles with no standards - that hurts all of us.