They are some of the reasons why I don't have pets. It's rather like having a permanent child. No hairs, no poo pick-ups, no walkies in all weathers, no muddy paws, no vet's bills, no expensive food or litter, no cattery/ dog pound bills or paying someone to feed and walk them.
My unalloyed joy was with my children but I do understand that, for some, pets are a comfort to talk to etc.
What I don't really understand is why people don't like to always be open with family or even with friends, with regard to helping out with GC, lifts, pets, finances or anything else.
GN is a great sounding board when you feel at the end of your tether but don't let family frictions go unaddressed.
I've always believed in honesty being the best policy, otherwise people think all is ok when it's really not.
It doesn't need to be confrontational. Just a reasonable chat over coffee when there is nothing and nobody to interrupt.
I hope the cat situation becomes more bearable but, as they age, be prepared. Good luck.