@AppletonP
It's not essential but it is limiting to not know how to ride. I think it's important to keep their world as wide as possible when young by teaching them all the skills you can. Have the bike shop take off the pedals/crank shaft. He needs to learn how to glide with both feet up first. Then get him on an exercise bike to master pedal forward. Then when he's zipping around confidently on the real bike put the pedals back on. And I'd get a used bike that's one size too small. It will feel less intimidating. Put the seat down fairly low to start. If he feels unstable he will give up.
I agree with this. It's like swimming. I know swimming, and being able to ride a bike, are not ESSENTIAL and that people can live a perfectly decent full life without being able to ride a bike, or swim. However, a number of people I have known have found they missed out somewhat through not being able to do one or more of these 2 things.
DD went to Florida several years ago, with her boyfriend and 3 other couples. One of the 8 of them couldn't swim, and he missed out on SO much on that trip, because lots of the fun and activities was very water-sports based. I also know a few more people who have said they felt they have missed out on stuff with not being able to swim.
Also, I know a few people who can't ride a bike, and they have said quite a few times, that they wish they'd learned, how handy it would be, and how much they missed out on bike-riding fun with other kids as a child/young teenager.
Finally, regarding driving. Although some people have perfectly decent lives without being able to drive, I know/have known quite a number of people who can't drive, who find it very restrictive. It limits their career opportunities, it take 2 or 3 times longer to take to most places, and they often have to depend on people for things like hospital appointments, and anywhere really that is hard to get to by public transport.
And when you have children, it can be very life-limiting for them too, as they can't go to some things that all their mates are going to. There's only so many times you can depend on other people running your children around.
In addition, many people in a relationship with a non-driver, get tired of ALWAYS being the designated driver. It's exhausting and time-consuming, and resentment sets in very quickly. Me and DH have both been able to drive for thirty-odd years, and we generally share the driving. We know several couples who have one of them who doesn't drive, (doesn't WANT to, not can't,) and the other person is deeply resentful of it.
Yeah, a few people who don't drive, don't do it for a valid reason, but there are way more who just don't do it because they don't want to/can't be bothered to learn. Some people will cite 'financial reasons' and say it's too expensive to learn, but will then spend a fortune on clothes, nights out, holidays, smartphones, games consoles, overpriced televisions, overpriced furniture, gym memberships etc etc...
I know that will piss some people off (saying all that about non-drivers) but it doesn't make it any less true. Unless you are a childfree adult living in the city centre (or fairly big town centre,) and have everything within a couple of miles - job, family, hospital, doctors, dentists, friends, theatres, cinemas, restaurants, pubs etc, etc; you are going to find life difficult not being able to drive.