I think it's fun to look through old mags & catty's, and they're good for reference.
If you decide to get rid of them, why not ebay the Scrapbook Answers mags in lots by quarter or by year. I haven't checked lately but they were selling on there last year.
Maybe you could try selling the catalogues too. You know what they say, one person's trash is someone else's treasure.
If you keep them, I vote for putting them in the attic since you said you don't have the room in your living space.