I'm a retread, got back into motorcycles 8 years ago after a 35-year gap. I turned 64 this summer and did 4 months/24,000 miles from the East Coast to Alaska and back. Had a great time but I don't think I ever did over 500 miles in a day. I am vertically challenged (29" inseam) and a factory lowered GSA suits me well. It's a pig to pick up so I need to plan carefully to avoid dropping it. At some point I expect it will become too much for me, or my judgement or stamina will deteriorate. I can't say at this point whether I'll hang up the helmet or downsize when I can't do long trips. Call me vain, but I'd like to get my BMW 200,000 mile award before I think about that (still 65,000 miles away, maybe 3 years?).