Funny thing is I moved to kegging, but I still buy beer and my friends won't stop bringing me their empty bottles, because I told them early on that I would replace their empties with full bottles if homebrew. I can't bring myself to toss them so I have hundreds. My wife is on me to donate them to those in need but I'm to lazy to sort them. I like to keep bottles appropriate for competition and give away the others.
Its a great hobby, I hope you have an understanding/supportive significant other. Mine bought me my starter kit so if she complains I remind her that it is her fault.