I want followers so that more people will see what I have to say and they can comment on it. It's a lot of fun to talk about books with other people, so having more followers means you get to talk about what you love more often. That's just how I see it!
I don't really have much to say of importance, but followers makes it more fun.
Because it's nice to know that somebody out there actually reads what you write / likes it enough to want to keep track of what you write.