I only really have one or two comics that have any sentimental value, like the book I bought from my first summer job. Generally, the more I've collected, the less attached to material things I've gotten. I stopped buying back issues back in the 90s, once I completed my runs of X-Men, FF, and Avengers. I'm not even remotely interested in resale values.
At this point, I'm considering going totally digital. It's only the stories I care about anymore.
Ugh. It's definitely cheaper, but I like to have a physical thing to hold and read. And I enjoy the hunt for back issues a my LCS, conventions, and comics shops in other towns I visit.
Nope, I'm all about the hard copies.