Trap Play said:

With a FA class as weak as this one, Betts could potentially be a starter somewhere else. What is he thinking?
IF this is true, it's probably a combination of the following things:1) Betts is in an ideal situation given his skill set. He's a good, but not great, NFL RB. He probably could rush for 1000+ yards as a starter, but he's no Pro Bowler. He's on par with Lamont Jordan, Chester Taylor, Tatum Bell, Thomas Jones, etc., who are guys who can have a good season but aren't on anyones short list of RB's "to have". He's excellent as a 3rd down RB who can spell the starter, and the Redskins need that given that Portis has gotten banged up every year he's been with the Redskins due to his heavy usage.
2) the Redskins aren't shy about paying FA players and they recognize his value to the team. He could be as well compensated by them as he could be by another team.
3) Betts' personality is quiet and workmanlike. I'm sure he'd like in a perfect world to start somewhere, but I don't view him as a guy who needs to start. He may well be happy on a roster with a good coaching staff and teammates, and more so than chasing the $$ to a new team.
That's just my take on this and on Betts. As a 'Skins homer I'd love to have him back. He's very valuable to the team.