When you drop out eventually, you have a big pile of money you can use to be a player in the game. You can't just spend it on yachts and stuff, but you can dole it out in a manner that keeps you on the best guest lists and gets you invited to all the fun DC events.
That's why George Pataki ran for President three or four times.
When did Pataki run for POTUS?
I think I missed that election.