This will probably be TL;DR for most of you, but here is my sermon on riding a bike:I tried walking for health. It bored me to tears, and my knee didn't like it.
About 8 years ago, I decided to bike, and made a good decision, and that was:
I bought a bike from a bike shop, not Walmart.It was a Specialized Roll, cost me $600, which seemed like a lot of money. But I test rode it across the parking lot, and that was all it took to convince me. The quality was so much better, and it rode so smooth and easy, I was sold in seconds. And it was a "comfort" bike, so you ride more upright.
That bike is why I say to not cheap out on a bike, whether electric or not. I got several thousand miles of trouble-free, enjoyable riding out of that bike, and I think I would not have stayed with it, had it been cheaply built, and less fun to ride.
Any good bike is a great tool in my opinion, because you can go further and see more, and it's more interesting than walking the same 10 blocks every day.
Here's a thread about Caprock Canyons, including the old fat guy and that bike
https://texags.com/forums/39/topics/2964937 My wife was not interested in a conventional bike, too uncomfortable. I tried to talk her into a recumbent trike, and she didn't see the advantage, and thought they were too expensive. Flash forward to last spring, and I spotted a used Catrike, that had been converted to electric power. I had knee surgery coming up, the price was reasonable, and I talked her into buying it, so I could ride while recovering from the surgery.
I convinced her to ride that bike while I rode the 2-wheel, and she was hooked. She put hundreds of miles on that bike, while I was laid up from surgery. Since she had claimed that bike, I ordered a new one.

More pics and specs at:
https://www.utahtrikes.com/RECENTTRIKE-5955429_CatrikeVillagerRecumbentTrike.htmlSide note: we really like Utah Trikes, great service, they ship bikes fully assembled. And the nearest Catrike dealers are 300 miles away in ABQ or OKC.
Since then, we have ridden the heck out of them. I built a carrier for the RV, and we have ridden all over, including the Vicksburg Battlefield. So far this year, I have 580 miles on mine, she has 760 on hers. Riding together is great, and a way to keep me from sloughing off (she got ahead of me when I was sick) I think it really helped my surgery recovery, and general health.
The trikes are so much more comfortable, and the electric assist means you can travel really long distances. As I said earlier, as long as the weather is moderate, the assist means I don't care about wind or hills. Makes it a lot easier to convince yourself to ride and gives you more days of riding. And you can turn the assist higher, lower, or off, depending on how much exercise you want.
The downside is they are bulkier, so won't fit in a normal bike carrier. Two of them will fit in a GMC short wide pickup bed easily. And they are not going to work well on really sandy or rocky trails, though pavement, cinders, dirt, packed sand will all work. And you are definitely not going to ride on single track or mountain bike trails.
But for someone with knee problems, balance problems, or generally an old fart, they are fantastic for day to day riding.
And yes, they are expensive, but the quality shows.