Remarrying after a long relationship

A good friend of mine lost his wife of 29 years to cancer several months ago and he's about to do it all over again with a woman around his age (59) that he met through other friends. I'm happy that he found someone and I wish him all the best of luck, but if it were me, I wouldn't do it again. Next week, I'll be celebrating my 28th anniversary and it has been a good run, but there was a lot of work put in by both of us to make it a good run.
God forbid for anything to happen to my wife, I just don't think I have the energy or patience for another commitment. I think I'd live the remaining of my days out as a bachelor.

What say OT?