All 4 of my dogs are males for exactly that reason. I truly respect all the work breeders do and I don't have the desire now or any time in the forseeable future (or probably ever to be quite honest) for that responsibility.
We do have bitches that come over to play but their owners are very knowledgeable dog show people and watch for signs that anyone may be coming in season. Obviously then they aren't allowed to play except with puppies or other bitches. I have had intact boys for 13 years and never had an uh oh litter, or any litter for that matter.
Also my boys are show dogs, as are all of the dogs who come over to run, and have to remain intact. The last thing any of us want is an OOPS breeding.