Those were just some perks of being in your twenties.
When I was in my twenties life was easier but it seemed already complicated. Looking back I think I was an arrogant prick. I thought I know a lot about life while in reality I had no idea.
This continued when I was 25. I thought "ok with 20 I was and idiot but now I know how things are". Same happened when I turned 30 and I am sure I will keep this habit going.
Actually I was broke the whole time and I feel that made my life easier.
While I hated the subjects I studied there were always parties.
I did not know anything about nutrition.
Through training and traveling I meet quite a lot of people in their twenties. Some really impress me and sometimes I wish I was like them back when I was young.
But I feel they very focused. In german you would say "Fachidiot" meaning very good at one thing, no clue about the rest.
Wasting time was great as well in the twenties as time seemed to be unlimited.
Good times...but if you are twenty know that good times are ahead of you as well.