I tend to be a minimizer, and I have two organizers: One for my favorite underwear (mostly thongs and g-strings) and another bin with full bottom bikini's or tangas that I only wear once in a blue moon.
If it drives me nuts, I don't like it, or it doesn't work for me, I donate it to our local charity (if it is in excellent condition). If it's getting ragged, or the white is washing out, it goes to the trash.
Tossing out old Underwear
Re: Tossing out old Underwear
I toss old undies when they have holes in them, the color fades significantly or are otherwise damaged. Luckily, this has only happened to maybe like 4-5 pairs in 3 years of collecting underwear and having maybe 200 pairs.