I collect books and have far too many. I do read all of them though as I am a compulsive reader. Affordability is not really an issue as you can always find a bargain shopping around the various secondhand sites or using
www.bookfinder.com
I guess if you have not got time to read at the moment make a list of titles you really want to read. Then when you have the time order them from your local library if money is an issue.