OK. It was a different time. Different jobs market.
Aged 18, i had had enough of education. I left school with A levels. Unusual for my generation. Very few went to uni. Many of my peers went to teacher training college. Teacher training was different then.
I took a 'respectable' job. I was bored out of my mind. I took a 'lesser' job which I absolutely loved and adored. I was 💯 happy, fulfilled and contented. I also made plenty of money and was successful. Eventually I ran my own business, again I was successful. Lucky me. I always had my A levels as a back up.
One day, in a moment of idleness, I decided to study a part-time degree. I did. I passed. Then I decided to study a part-time science degree, with the intention that it would help me to progress my business/ be useful if I decided to step down a bit from my business.
Next, i decided to do a masters degree. All of this studying was part time, alongside running a business, home and family. All from a person who had been disillusioned with education aged 18.
Whilst doing my masters I decided that I was ready for a change of direction. I studied for a pgce alongside winding down my business. I became a teacher.
The moral of this story is: Don't worry. He will find his way. If anyone had told 18 year old me where I would end up, I would never have believed them.
The only proviso that I would add is that your son must get a job. Even if it's sweeping the streets, he's got to do something.
If he did decide on university, would he be able to stay at home and commute? This is becoming increasingly popular. It is cheaper and not everyone wants to leave home aged 18.