Hard to choose a single photo, so here are a few of mine;
My daughter (C: 1994) having her first riding lesson when she was 10, and OH, how much trouble I was in when her mother found out!
The daughter several years later, on my TT500C, and OH how much trouble I was in when she crashed it and I was more worried about the broken rear guard and bent handle bars (both original parts)
Myself after DNF'ing a 250km enduro on my 1969 Triumph (Yamaha RT1 front end) in about 1977(?). The bike caught fire when a fuel line came off and the fuel was ignited by the "really cool" flames that used to shoot out of the exhausts on a trailing throttle!
Another DNF picture, this time the first 4 Day enduro at Cessnock in 1978.
And finally, me as a winner in the Pre-84 class at the 2010 River Murray 6Hr reliability trial onboard my 1979 AG175
CJ