I have done many things in my life that I lost interest in and moved on to doing other things. Some of them occurred in my 20s! The main issue I have with riding nowadays is the pressure - somewhat self-imposed, I guess, to wear all that gear and the time it takes to don and then, for the rest of the day, walk around wearing it/carrying a helmet/whatever. Our riding consists normally of a ride to someplace to visit, walk around, have lunch, etc. So dealing with that gear is a total PITA. If we were riding JUST to spend the day riding the entire time, blasting through the twisties, that would be a different thing but although the twisties are always part of our rides, we usually spend a good bit of the day NOT on the bikes.
Before we were obsessed with wearing all this cr@p, I grabbed a helmet, gloves and rode off. I didn't wear any special other gear, just whatever I was wearing. I rode to work every day the same way - helmet, gloves and my work clothes - slacks, shirt, regular shoes and, if I needed it, a jacket. I could walk out the door, hop on my bike and leave easier and quicker than I could with a car. Now it's the opposite by orders of magnitude!
I realize that nobody is forcing me to wear anything other than possibly a helmet, depending on local laws but I will admit that I have become a bit of a weeny nowadays re possible injury. Somewhat related to that is the fact that I taught my wife to ride many years ago and insisted she always be "properly" geared. I worry far more about her getting hurt than me getting hurt. So I can't very well ride without all the gear while I insist she wears it!
Of course, this could be a passing phase! I have a lot of interests and often "rotate" through them as the mood strikes me. Maybe I'm just "in a mood" right now...