I went to uni when I was 21 & finished my degree last year when I was 25.
I was generally about 3 or 4 years older than the vast majority of my peers, & although it was fine for the most part there were times when I was reminded that a lot of them had never known anything over than full-time education & mummy & daddy paying for everything.
It wasn't so much the age difference (which is negligible really) but the disparity in life experience. Although I was (& still am) very young, I nevertheless went to uni having already worked full-time for several years, having lived on my own, & having experience of fending for myself in financial terms. I'd also got the whole "Ohmygod-it's-the-weekend-I'm-gonna-get-SOOOOOO-drunk-&-tell-everyone-all-about-it-on-Monday" thing out of my system, as well as having a few of my thoughts on life, the universe & everything a little more settled in my mind by that age. None of these things are remotely extraordinary to anyone in their mid-20's, but to 18 & 19 year olds they're something of a novelty & a mystery.
As MDAO says, this sometimes had the effect of those younger than myself almost looking up to me in some way, which was awkward to say the least, & made me very wary of coming across as aloof & arrogant, which is something that I struggle with at the best of times. Although this is a
little disingenuous, as I did shamelessly exploit it to get laid on more than one occasion.

Well it would've been rude not to, right! :D
It was no big deal really, but it was slightly galling when a coursemate would throw a tantrum because daddy hadn't put that £100 in their account for them to buy some new shoes, or I'd have to remind my housemates that if we didn't pay the electricity bill we'd be cut off. 8)
It got a lot better when I discovered the underground music scene in the city I was in, & I made a lot of my close friends from that time from the older contingent who moved in such circles. It was nice to be in the situation where
I was the naive young 'un.
