GSP hasn't earned the right to sit around forever without making up his mind about his future. The thing is ... when he was trying to WIN the belt, he fought all the time, and even when he lost it - he kept in shape, in case Hughes or Serra got injured - because he wanted the belt back. Now that GSP has made tens of millions of dollars, he owes it to the guys who want to earn the belt and everything that comes with it - to either piss or get off the pot.
And since many people thought Hendricks won the first fight with GSP, I have no issue with them fighting straight away. I think Hendricks wins the rematch. In his last three fights, GSP has taken more damage than he did in the previous 10 fights in terms of shots to the head - or so says Joe Rogan anyway - and I just don't think GSP has the burning desire that he once did. Just my opinion.