Thanks for this discussion, it's something that I think about often as well. I know that I will eventually want to add to my flock and how to go about that is a conundrum.
I have four hens that went broody multiple times this summer, one who was broody five times!

It would make sense to let one of these hens hatch, yet I am not sure about the inevitable cockerels.
I don't have experience with cockerels and am frankly a little alarmed by the many threads about problem males on BYC.
I have an acreage in a rural area, so technically could have a rooster, but I quite like the relationship I have currently with my hens. I know that would change with a rooster in the mix.
My husband thinks that roosters are too loud, so he is not a fan. My son's house is very close to the chickens' area and despite being out of town, I still have neighbours who would be able to hear them.
It is not possible to get sexed chicks locally. They can be ordered and flown up by airplane. That's how I got my original chicks, but I think that starting life with an actual mother versus hatching in an incubator and then travelling in a little box on a plane would be so much better, but then again what about the cockerels?
I don't have an answer for myself yet.