Why do I feel older than my age?

I’m 26 but I have been feeling 40+ for the past 3 years or so. When I was 21 I still felt young. I felt like I could disappear somewhere and come back few days later and it would have no real effect on anything. I could live in the now and all my problems were so menial. But I also remember having friends who were 24-27 and they weren’t that different from my 21 year old self; they would spend their weekends partying and had situationships and lived paycheck to paycheck etc. Now that I’m their age, I’m nothing like this. I work a big corporate job, I’m saving, I worry a whole lot about taxes and the economy and spend hours doing research on best housing markets. And maybe that sounds good & mature to some but I really don’t want to be like this so soon. I find myself walking past a group of early 20 year olds going on a night out and think, ‘ahh I remember being young!’. I don’t really know what is the root cause of it all but I get the feeling that I’ll regret feeling like this through my 20s when I’m actually older. Any advice from anyone who hit the same bump?

Why do I feel older than my age?
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