I think it's wonderful when a hobby/interest morphs into something that you love and it pays for some of the costs of the hobby. I love the name Snoodle.I started out doing it for the eggs.
DH went into TSC and asked for a dozen RIR pullets. We got the eleven chicks they had left (five white Leghorns, five gold Comets, and Snoodle my Bantam Cochin Frizzle).
We've lost two of the Leghorns and one of the Comets to predation; I gave away another Comet b/c she was mean to some of my chickens.
I got the roosters from the friend who took the Comet for me. They are GLW x white Leghorn (where I'm hoping to get my white earlobes from) and SLW x buff Orp (no eggs from him yet; in fact, I just found out that he's not a pullet lol).
No, I don't have any giants; but Orps get pretty large.
Lots of breeds lay brown eggs (white is recessive, and green is genetically brown x blue).
You can do it for money. A friend of mine sells eggs and she said that, when her hens are laying at regular production, eggs pay for feed. You can sell pullets to local feed stores, you can sometimes sell "dressed" birds for meat to individuals or small local grocers or at a local farmers' market. Selling birds is another way to make money, especially layers, but not as many customers want birds as want the products the chickens provide (around here anyway).
Does that help?
Oh, I started out doing it for the eggs, but I've had a lot of fun and it looks like I can make a little money doing it too. =)