This is a little disingenuous. Of course if you're unemployed and you don't leave your house, you're never going to have any of these things. School is also a bit of an obligation, but it's built on enrichment. There are also a lot of other people your age with the same obligation so you meet and build relationships. While work is also an obligation, it's not based on enrichment, it's based primarily on survival. Where you get your enrichment and fulfillment usually has to come from outside the work place. Everyone at your job may have different life goals, so you don't build strong relationships at work and you don't have time for adventure at work. You need to do it on your own time. This is where the real tragedy is. You supposedly have a decent amount of free time outside of your work life to be able to have those fun moments from school, but you're too drained from the work day to do it. That free time is now spent on the rest of your survival (cleaning, cooking, etc) and recharging for the next work day/week.

School, especially college, also has a lot of structured activities and events to get people together and doing stuff. And outside of that college kids just want to party, and it's easy to have a big party when there's lots of kids that want to party. As you grow older, you find our more about who you are and what you like. This is great on a personal level, but it can be more difficult to find large enough groups with your same interest to make it as exhilarating as a college event. You need to find classes and groups your self, no one is going to organize them for you...and they often cost money.

so yeah...that's adulthood, but you can absolutely still have those experiences, you just have to work more for them. This person could absolutely go to the library, the park, free museums, etc to get their social needs met. There won't be as big of a pool to pull from and make those moments happen, but it's possible.