One last comment about weight. Since I got sick, I'm definitely overweight. You try lying in bed for 5 years thinking you may be dying, and not gain a few. But even so, I'm only about 15 pounds too heavy. It was worse, before I got healthier again.
But before I got sick, when I was still very fit, and 180 pounds, riding a bike still just kind of sucked for me. My problem was, when young I rode a LOT. I rode in the mountains, and back then I weighed about 120. I was a starving student, who lived on soup poured over rice then. Flash forward 30 years, and now I'm a guy who has been doing hard construction work for a lifetime. I have many pounds more meat on me, lots of added muscle on my torso, and I've been eating good. Some fat since age 30 too, but not much more than 5 to 10 pounds of it.
Bottom line, at 45 I was still far from fat or old, or out of shape. But nevertheless, riding a bike weighing 180, up a mountain, now SUCKS. It's nothing like I remember bikes, when I weighed 60 pounds less. Strap a bag of cement on your bike someday, and ride around the block. BIG DIFFERENCE.
When I tried an ebike, It was like rolling back 30 years. Suddenly I was flying along at 25 mph like I used to ride everywhere. I just fell in love with it. So yes, most of us e bike riders are old. But its not always a matter of overweight, it's just that we got mature and can't ride like teen anymore. I like riding at least 20 mph, and never really liked riding 10-12 mph.
But now we can!!! The ebike is like a fountain of youth. So why should the young love it? But the old do!