So after I turned every manga I wanted to keep into tightly organized CBRs, the total is 757 individual volumes of manga at nearly 50 gigabytes. this isn't counting the American comics in a separate folder, or the artbooks. A LOT of artbooks.
Stuff I'm planning to read now and that I forgot I had: Appare Jipangu, Futari Ecchi, Fire Emblem, and My Lovely Ghost Kana. Stuff that I'll never read again despite loving it: Saikano. It's just not something you ever read more than once.