If you can keep your emotions out of this, it's simple: a guy that has won 7 or 8 GTs is now a shadow of his former self.Maybe, once Froome goes through all the pros and cons:
On the pros side, forum members would like to see me retired, on the cons side, continue to do what you love and be paid graciously for it, win some.
I am sure that he will make the right call!
If he can't get way better than this. I doubt he'll be willing to fight for top-100 in GTs.