I am also reducing my pbooks burden, for the first time in my adult life. When I do start buying pbooks again, I'm going to have a strict rule that more must leave, than come in.
My sweetie will continue collecting pbooks. His attitude is basically "You can pry my pbooks from my cold dead fingers." He puts up with my motorcycle modifications addiction; the garage looks like a tornado hit it. Least I can do is reduce my pbook collection so he can continue growing his.
The ebooks will make it easy.