Books here too. I often buy old books or even sets of books as an "investment" but can never part with them ~ even those I lend out I hope to get back. I hate using the library because the books have to go back.
I failed to gain custody of my first book collection. Didn't have room for it in the car when I moved out and when I returned to get it and other things every last item had been sold or tipped. I was not happy particularly as "promises" had been made as part of the agreement to part and give her the family home but I moved on and am now happily surrounded by books again tho' still hunting for copies of those I "lost".
Apart from that I have a weakness for a pretty face (so God alone knows how I ended up married to those I did neither of whom could be described as "pretty")
I don't swim.