I had mine done when I was 26, I'm now 33. I hate my boobs more now than I did when I was younger - they get in the way, they are heavy and they were expensive.
I remember being desperate from a young age, I was teased for having small boobs "tiny tits", so when I found out a friend was getting hers done I jumped on the band wagon. I had a discount for being recommended at the time, cost somewhere in the region of 3k. I remember being excited, looking in the mirror and seeing these horrendous cone boobs staring back at me, I put in a brave face and told everyone how much I loved them when really I hated them. They settled down from cone boobs to more of the typical boob job look, I went from a 34a to a 34dd.
Now I admit to people they were a mistake, I have to constantly wear sports bras to work because spending 12/13 hour shifts in a normal wired bra is painful. When I go to the gym they get in the way, tops don't fit me, ill have trouble breastfeeding as my nipples are over sensitive and it is and it's gonna cost me more money to take them out (they only last 10 years). I don't have cash to burn now like I did at 26 years old so I'm dreading paying out. I'm now really jealous of small boobs and look back on old photos and think "what was I thinking my boobs were great as they were!" I also now notice guys talking to my chest and not my face which is really annoying!! I'm really conscious of keeping my weight down too as they grow with putting on weight, which makes them even more uncomfortable and the skin in between my boobs can stick out (where the bone of the bra goes in if that makes sense) if I put on weight.
On the plus side I look good in a bikini top at the beach once in a blue moon.
It's not the same for everyone I have friends who love their boobs after going for it, but I just wanted to share a few things I have found with mine. If your set I'm sure none of the above will put you off, it wouldn't have put me off when I wanted mine.