The reality is I love art. All kinds of art. I like to mix/match, originals, posters, things from my past, you name it.
Art doesn't just have to be on the walls. You can stack it against a long wall and make a whole display. Take a cue from Art Galleries, they stack art all the time.
Art below is in my guest room, it takes up most of a wall. I love it.
Now, if you have small children, this probably isn't for you.