Looking back, I went through a 'single young professional' phase where I just bought any books I wanted to read, and it seems kind of silly in retrospect. When I moved over here I got rid of maybe half of the books I had, mostly by giving them away.
I can't say my taste in reading has improved though :-) I've been working my way through some Cherryh, Heinlein, Bernard Cornwell's Saxon stories* and Simon Scarrow.
*Anyone else noticed he seems to be repeating his Arthur series at times? Though Uhtred is somewhat less likeable than Derfel.