I have so much bottle regret. 3 or 4 years ago I had a fleet of a couple hundred, all matching, in 6pack boxes from a work open house that served a local craft brewery all night. And, 2 years ago when I switch to kegging, thought, nah, I'll never need that many again. Told my dad he could get rid of them (they were taking up space in his garage).
Now, I've been brewing up a huge amount, and giving it away to family, but I've been forced to BUY bottles from the homebrew shop! Went looking to pick up a few 6 packs of craft to help the cause, and EVERYTHING was in cans, or 650ml bottles.
You don't know what you got till it's gone....