Obama was a better option in 2012. A “President RomneeeBitch” would have lead to a GOP establishment that we may have never had the chance to overcome.
A Romney win in 2012 would have probably done to the GOP nationally what Schwartzenegger did to it locally in California: kill it dead. Arnold ran as a right-of-center guy, governed as a RINO lefty and when his lefty policies crumbled the state, Californians said “see, i told you conservatism is a disaster” and gave up on the GOP completely at the state level. I heard it personally while I temporarily lived there at the time.