Sitting it out is not an option since it guarantees Obama stays. We have to get both houses of congress solidly in our corner (Conservative policies, not just more of the same Repubs) and come Obama or Obama lite we can reverse some of the damage.
I now see I was a little unclear. Meant I would vote for Romney before I would vote for Obama and before I would sit it out. A vote for Romney is better than either of those.
I have been one of the most vocal Freepers against sitting the elections out, like the last time with McCain vs Obama. I am against it for the same reason you are - it is the same as a vote for the other side.