By renting? Verses donations?

Not trying to be oppositional, but how does it contribute to a stronger community by checking out a book instead of buying? I contribute to my library, and I check out books or authors I'm unsure of, but I buy most of my books. I dont move often, I get that point. I just don't understand how checking out a book improves community.

Buying. I still support my library by renting movies, games, and some books when binging. But I like to buy my books. Books I read are part of my history. When I walk into my personal library, it transports me to emotions and feelings just by reading a title.