Why is "Ulysses" by James Joyce seen as one of the best books?

By field_simple

So I’m kinda wondering… what’s the point of this book? I’ve heard that almost nobody actually finishes it and that it’s brutal/hard to get through. I bought it a couple months ago but still haven’t started it, so can someone explain why people hype it so much? The whole Ulysses thing confuses me a bit.