I didn't have a routine/discipline to organize myself to do something meaningful, so it was pursuing hobbies with minimal effort. Afyer a while all the things I enjoyed, because they would help me relax after work felt pointless and I went trough a short depression caused by a breakup which made the meaningless part feel even more real.

Also when you have free time, you burn trough the cash reserves so quickly because of so many thing you can do with money.

I thought that when I'll be older I'll drink more and be happy all the time, but if you are not stressed by anything and in a sad place, alcohol doesn't feel good, just pointless.