His career was starting to falter before he got into politics.
Yeah, he had huge hits. Terminator, Kindergarten Cop (lol. IT WAS GOOD), Total Recall. But he started to get longer strings of misses. Last Action Hero... Twins...
Getting out was the right choice. Getting back IN seems a little bit like Michael Jordan trying to play professional baseball. It's just not what he's famous for (and best at), and he's just too old to do it.
Jordan was an average baseball player wasn't he? Which is pretty fucking good, and an impressive display of athleticism to take on a new sport that late in a career and not fail miserably -- but it's not beingtheMichael Jordan.