I am absolutely 100% for the library.

For one, the time limit encourages me to not just put it on a shelf and look at the pretty cover for 5 years and actually read it.

Secondarily, if you're limited on space, it is a fantastic resource.

You also can often read it before you buy it.

Another note too if if you end up having to purchase a book, and you don't intend to keep it, many libraries have little "friends of the library" stores where you can donate them and then they will sell them to help fund things for the local library. Some little coffee shops I notice here recently have began making a little shelf of books people just allow whoever to take or read while they are there too, you could see if one of yours is doing that!