The importance of these "experiences" is garbage baby boomers feed young people because they're the decadent generation. Most generations prior to them never had those things. (It wasn't until WWII that more than 50% of Americans graduated high school.) I skipped senior prom to go to a robotics competition. I assume I attended graduation, but I couldn't for the life of me tell you where it was or anything that happened. I have plenty of friends from college and law school. I missed my 10-year high school reunion because my daughter was born the same week, but as far as I can tell from the pictures it was in a large basement of some sort.
This abject bitterness is only a minor counterpoint to harmless rituals held by many many people.
If you live your life in a bubble apart from the rest of humanity, and you are happy, good for you. If you couldn't find friends in high school, sympathy for you. But most humans are social creatures who put value on having community.
That would still have happened, only two years later.
> I don't have high school reunions to attend.
Is this an american thing? I am living in Germany and I know plenty of people that don't care about high school reunions at all.
I don't know your situation, but you might be idealizing.
The 7 AM to 4 PM schedule of high schools is just insane. No kid needs to be at school that long, and that early. And most classes give out excessive homework on top of that.
Conventional high schools are infantilizing, harmful to health (waking up at 6 AM to get to class is absurd), and teach people to hate learning. And if you're not a social butterfly you can expect to be bullied as well.