I feel oddly vindicated by this article: I never felt my comics collection was going to have future value. I always collected stuff because I wanted to have whole complete storylines available for my reading.
Nowadays my 90s comics -- runs of Spider Man and The New Mutants and Dr. Strange -- suffer from poor storage and the occasional attacks of my children, who can't seem to put them back. When I started collecting again after college, I stuck almost exclusively to trade paperbacks and graphic novels, which have the virtue of fitting neatly on a shelf. Today I only keep the comics that fit on a single tall thin bookshelf, and periodically purge the ones I don't think I'll reread.