Ya should still be riding bikes judging by this photo J,cos it looks to me like ya know ya lines,and ya bikes,and ya're obviousley a good photographer.Look at Sven Martin he still competes in big mountain events,and is a world class photographer.
Anyway who am i to tell ya what ya should and shouldn't be doing,you obviousley know ya're own limits and know were your most comfortable,so good luck in all ya decice to do.
...Gringo...