Why not use a bicycle or a regular (non-electric) scooter? Honest question, I'm not being snark.
A bicycle is fine but you have to put in effort which is not always appealing and you can't take it into buildings (though on the other hand it's more reasonable to leave it locked up outside).
There's definitely a unique space that e-scooters occupy where they're better than every other option.
I also had an old 'lead acid batter electric scooter I used to ride in London a lot in 2004ish - was great fun and could carry me and my wife together to the pub and back on the canal paths - they weren't an issue back then as then the police only used to care about the petrol 'goped' scooters that we illegal - though you would see a few of them around London, in parks and on the roads. Many I love alternative transport (while almost always owning a car too). I had a cyclemotor/autocycle - a road legal mountianbike with 35cc petrol engine - got stopped a couple of times by the police on that, but they were just interested in what it was as they'd never seen one before. Had something called a 'Daylight MOT' far simpler to pass but can only ride dawn to dusk.
Man you have me wanting to dig some of these out of the sheds and garages that they are buried in!
On the scooter I go the supermarket with the scooter, do my shop and it is so much easier to scoot home with a bag over the handlebar than it is on a bike.
I love cycling and I cycle a lot for pleasure, but for errands the scooter is just perfect, no effort, easy to take in the house or pub, or train, or shopping. After a day of work I often just want easy.
Before I had the scooter I did likely cycle more, but I also used the car much more.
At least for me. I have a very short walk to the store, and I'd consider a scooter but using the bike is just too much of a hassle most of the time.
As a worst-case example, take crossing the Queensboro Bridge which took about ~30 mins by foot, ~20 mins by kick scooter, and less than ~10 minutes by bike or electric scooter. On the surface that seems like a kick scooter fills a valid niche. However, on a sustained uphill a kick scooter is more tiring than walking and not substantially faster, so it's often simpler to just carry it. It is faster on the way down, but also stressful as you have to sit on the brakes the whole time to keep from going too fast on 200mm rubber wheels over cracked concrete. Saving ten minutes of walking just wasn't worth the extra stress and weight.
You can get kick scooters with inflatable tires and suspension but they're so low volume that it's not much more expensive to get a mass-produced electric scooter.