I buy about 20-30 books per year and probably 100 rolls of toilet paper. If you haven't stopped using toilet paper, I wouldn't worry about your library. Not buying books for environmental reasons is for the overwhelming majority of lifestyles optimizing in the wrong place.
It's rare for a person to read more than a couple thousand books in a lifetime. That's under 2 cubic meters of space total. That's massively dwarfed by the amount of waste that we generate in a lifetime. I'd need about 3 years worth of books to fill up a trash bag.
It's rare for a person to read more than a couple thousand books in a lifetime. That's under 2 cubic meters of space total. That's massively dwarfed by the amount of waste that we generate in a lifetime. I'd need about 3 years worth of books to fill up a trash bag.