PenelopeRose, I wouldn't paint with so broad of a brush when discussing hatcheries. You must remember something - there are differences between commercial food hatcheries and hatcheries that breed specific birds for sale to consumers. Egg laying facilities do cull male chicks because they offer no revenue, however hatcheries that sell chicks to chicken keepers operate much differently. You must remember that they are businesses, and unethical practices like the ones you mention (culling of day old males) are actions that many users on here would find repulsive. For these reasons, the hatcheries mentioned on this forum practice better standards. I can't speak for them completely, but I have seen hatchery representatives interact with users on this forum on questions, concerns and problems. This forum would be overwhelmingly critical in the event that unethical practices were exposed. For these reasons, you cannot associate hatcheries with those used in food production.
Secondly, it is more difficult to find a breeder selling pullets than you would think. Raising a chick costs a lot of money, and presumably raising a chick to pullet age implies that the owner will keep the hen. There are sellers that sell pullets, but I've often spent weeks/months searching for pullets because of their scarce availability.
My true concern with hatcheries is shipping. I put very little trust in the transit - not because I believe humanity is bad - but I can't imagine that every box is read properly or tended to well. I really do abhor the idea of baby chicks being sent in the mail because I've seen some horror stories of some not making it. It is just a very rough journey for the birds. For those reasons, I search for local breeders, but it doesn't always work out well.
Lastly - most local breeders in my area buy chicks to raise and sell as pullets. In effect, you're still getting a hatchery chick. Unless you are going directly to a farm where they chicks are hatched, it is entirely possible that you've bought a mature hatchery chick when seeking pullets. My best advice is to do research, ask around, post in the buy/sell, and explore all options. Just don't hate on hatcheries in the process. I don't think many of the ones mentioned on this forum are bad institutions. Sometimes, they are the best alternative for a buyer looking to raise chickens.