On a boosted, I can go to the other side of my city, but I cannot do the return trip.
I can do the 6 miles to go there (since there are slopes, we are far from the theoretical and inflated max range)
Spend several hours .. and I would love to be able to go back on my skateboard afterwards.
That's unpalatable for most people, and probably unpalatable for everyone if you consider the wear on your joints. I'm not an expert but I think that even if you feel fine you're probably setting yourself up for osteoarthritis. Running a full marathon on a single day is more dangerous than running two half marathons on different days, and riding that far has gotta be sort of like running a marathon in terms of moving the joints.
My main worry on an eskate is to fall and gravely injure myself. Even if you are extremely skilled, you might still miss a pothole one day or a car might do something very stupid.
As far as wear on my joints .. I dunno .. most of the riding involve no shocks, the only fatigue is to have to stay on a slightly bent position.. your calves are the muscle that fatigue the most during eskating.
I’m right there with you. I’ve been running long distances and it only seems to help my knees. However, when training for a full marathon I realized I had to work my way up to that level or my joints would be sore. I don’t think someone who overdoes it on a scooter has a training program to follow.
I’m not spreading that myth by suggesting that people consider choosing a half marathon rather than a full marathon, gradually increase their training level, or avoid something that might have the risks of running without the rewards.
If it runs out battery, you can still push a boosted board manually. It's technically true of a scooter but it's impractical and I think the boosted board is lighter.