1) I now have a backhandspring and backtuck at 180lbs after struggling for over a year at 140lbs.
2) I can now toss a girl into my hands and press her straight up into the air.
3) I'm immensely more confident in myself, body, and decisions.
Those are a few I can think of. The first 2 made me better at my chosen sport/activity - Male cheerleading (a bit like olympic lifting with girls).
The third one is what I'm most grateful for and what will have by far the most useful carryover for my life. Barbell training turned me into a man (well I'm 20 lbs short still...). Before I was a pussy, and now I'm not. For that I'm forever grateful.
Plus barbell training just makes shit easier.