@Brandon9000,
I don't find it intolerable at all.
I just think it's amusing when people aren't honest with themselves about why they're doing it.
Do it because you're a Republican rooting for your team. Or do it because you don't want women to be able to get abortions. Or do it because you want tax breaks for the wealthy. Whatever your true reason is, vote for Romney, but don't do it claiming:
Romney's a conservative! (No, not really. He's a moderate. See his policies in Mass.)
Obama's a liberal! (No, not really. He's a moderate, too.)
Romney will help the economy! (The President has damn little to do with the economy. )
Obama is killing the economy! (See above.)
Romney offers a stark contrast to Obama! (Not from what I can tell. He's afraid to contrast himself with Obama, because Obama already has all of the moderate positions staked out. To contrast himself with Obama is to come off as a right-wing nutcase.)
Romney has executive experience! (What do you call four years of being President?)
You're a Republican voting for a Republican? Fine. Just be honest that you're doing it because you're a partisan, and don't blow smoke up my butt trying to claim it's for some higher principle.