While Tiger Woods hasn't won a major since the 2008 U.S. Open, you won't catch the fourteen-time major champion sweating his lack of recent success.
As he pointed out in recent comments with reporters, golf is hardly a typical sport, and while 36 isn't young, it certainly isn't old either:
"Well, Jack did it at 46, right?" Woods said, referring to Nicklaus' last major victory. "So I've got 10 (years). (Tom) Watson almost pulled it off at 59. It can be done. We can play for a very long time... Look how many guys are 50-plus still playing out here."
One thing is for sure, if Woods doesn't break Nicklaus' record of 18 major championships, it won't be for lack of trying.
His body may not be what it once was, but it is highly unlikely he's going to find something else to do with his time in his late 30's and early 40's. Nor will he ever have to worry about qualifying for a major, as there's no scenario where he wouldn't receive a sponsors exemption.