That`s so similar to my experience. Got back on the bike when I was 41. They had index gears by then. I got a bottom end mountain bike (still wasn`t cheap then) and used it for work and riding over the hills in my area. AQlso some I couldn`t manage when I was 16 or so.

I`m 66 and can still do those hills and enjoy it every time. You think your own thoughts; not all good. . . I`ve succeeded blowing up the Houses of Parliament where Guy Fawkes failed, and (by the time I get home) I sometimes realize the futility of this . . (English Shrug)

Have fun Longer on a Bike!