Incubators are for poor souls like me who haven't managed to find a breed of chicken that will go broody. We have to cheat, buy in eggs of other breeds, have them sent vast distances to us, hatch them in the incubator, and then hope that at least some of the resulting chicks won't have had all their natural instincts bred out of them.
It's much better if you can just let a momma-hen do it, but you have to get yourself a momma-hen somehow! She will turn the eggs just the right amount, teach the chicks how to forage, keep them at the right temperature and snuggle them underneath her to keep them safe.
We have just had our first hen go broody - here she is, to my mind the most beautiful chicken I ever owned (just because she's broody - she's actually highly reminiscent of a crow...)
Unfortunately, she's also highly intelligent and a good flier, so we've no idea where she spends all day. She just appears once a day for a quick bite to eat and a drink, makes lovely clucky broody noises, then waits til no-one is looking and disappears again. I don't hold out much hope of her surviving three weeks 'in the wild' with so many predators about and I'm determined to find out where she's hiding her eggs and put them somewhere a bit predator proof, but she's equally determined not to give me any clues as to where she's hiding up.