I don't hang out with college kids or anything but I'm 25 and I still feel like I'm 18.
I have a 6 figure job but I have no responsibilities. I have no bills to pay. I still live at home. I get free food at work so I dont even need to buy my own breakfast/lunch/dinner.
If anything I feel less of an adult now than when I was in college.
I don't even have the responsibility of a relationship right now whereas in college I was in one relationship or another throughout the whole 4 years.
My day is basically wake up at 10 go to work, come home anywhere from 6-8, play videogames and repeat.
I don't know when I'll feel like an adult, but I 100% dont feel like an adult right now.