Macro trends and averages, so anecdotally everyone could be an exception but my observations are: If you are 20 you have more parties than when you was 10. If

Macro trends and averages, so anecdotally everyone could be an exception but my observations are: If you are 20 you have more parties than when you was 10. If you are 30, about the same than when you were 20, possibly with different people than 10 years ago. If you are 40 some of the people you were partying with are unavailable because of work, family, moved to other cities, etc. On average it's increasingly difficult to make new friends because you're starting to be on the downhill slope of the make_friends() probability distribution, which depends not only from you but also by the other people. 20 yo are looking at you as ancient and out of touch with their reality and you might look at them as weirdos and out of touch with reality at all. If you are 50, more like so. Add that some are not here anymore. The music 20 yo listen to is weird shit and their fashion is in part the n-th iteration of what you already saw. Currently it's some variation of the 80s. A friend told me her daughter is dressing like her mother when my friend had the age of her daughter. Same and more like that for every extra 10 years, up to when it will be difficult to get out of home or let people in and stay long enough to call that a party. Add that more time gives people more ways to dislike each other, because stuff happens, people take stances and some fights cannot be forgiven because they define who we are and what we believe. I hope that this is not depressing :-)