I do ride a scooter. a SYM HD200. But it is actually more like a small motorcycle, with a top speed of over 70 mph. A moped will not work where I live because they are not legal to ride in the bike lanes, and are to slow to ride in a traffic lane. There are those cheap Chinese 2 stroke engine kits, but they are pretty much junk, and while they are legal in the bike lanes, they are not legal on bike paths. They are also noisy. There is one particular bike path near my house that runs along a canal bank, and is over 20 miles long. I used to really enjoy evening rides along that path.
Both my knee and hip joints are in bad shape, and trying to pedal is extremely painful, in fact my doctor advised me not to do it, because it is likely to cause further damage.
As for the bitterness part, I did not mean for it to come across that way, but when you are 56 years old, and have ridden bikes all your life, and no longer can, it is a bit depressing. An ebike would not be exactly the same, but it would be close enough. It seems that there is simply no battery out there capable of the kind of range I need. This seems odd, as there as there are several electric cars with a several hundred miles. I believe the Tesla has about a 300 mile range, and the Nissan Leaf about half that. I would love to have an ebike with a 30 mile range, with no pedaling, even if I had to ride it at 5-7 mph. In fact, the slower you go, the more time you get to enjoy riding. I had very little trouble transitioning from a mountain bike, which I rode fairly aggressively, to a cruiser, which I rode in a very leisurely manner.