You don't really need a rooster, especially if you live in the suburbs. You may not be allowed one base on that alone. If you are allowed one, you don't NEED one unless you are going to free range your girls or want to hatch your own eggs.I just want to watch them, give treats, and have them as pets. I can remember being a little girl going to my grandmas run and picking grass for the chickens. I would dig worms to watch them run with them. The eggs are frosting on the cake to me. I just want the amusement of them. They won’t be free range out of a run because I live in a suburb. I will move their run when all the grass and stuff is gone.
I love my two roosters, but they are noisy. I live on ten acres out in the county, so that's not a problem for me.
, pecking order thing.
Never have I seen a rooster protect the flock, either, unless mine are/have been completely spineless. Instead of standing strong when a hawk flew over, or at least leading the hens to a safe place, they were the first to hide!
My hens are far braver. 
And, provided it's not in excess, their crows complete the "farm" atmosphere. 