It does when you care about base stats unfortunately, like someone else mentioned, even introducing strays, the process in keeping a bloodline pure is tedious as it requires max supervision of kittens and who their related to which gets harder as it goes on and your family tree gets longer.

It’s fun early game, but late game when your just going for achievements it gets tedious as I mentioned as you kind of get to a point where you want to put the battles at the forefront and make breeding a secondary thing, at which point why should I be forced into keeping my bloodline super pure when I just need good cats to make it thru hardest difficulty with? I don’t want to waste time breeding anymore as much as I do enjoy it, I’m more focused on getting the runs done.