Originally got into bike as a way to keep my legs "fit" for
skiing. (Not counting the "its the only way to get around
when your 10 years old".) The biking took over and
the skiing just sort of fell by the wayside.
I had about a 10 year layoff, where I wasn't on the bike.
I took it up again because I needed something to do, and
to supplement my diving.
It hasn't supplanted the diving, but its awfully darn close.
I ride more than I dive (not counting pool sessions and
lake sessions with students).
just an aside, since riding again, my air consumption and
general diving has improved. I'm impressed!

Marty