MPH,
I'll say this again.
I've just turned 60 myself and while there's not too many upsides the big one was not having to fly with 70 year old f/o's anymore. Some should be mowing the lawns, a couple of these guys are showing severe symptoms of old age, but they still pass their medicals because there's no way of checking what's going on in their brains.
Even the doctors will admit they know what these guys are like at 0300hrs but there's nothing they can do.