Your wife is an excellent negotiator.
Honestly, I'd say two is better than one. They will keep each other busy and will be less anxious.
Exactly how a good compromise works, neither gets what they wanted. -also congratulations.
Sorry for your loss, though it did take me a while to realise you were talking about cats...
So true. I have 2 sisters who seemingly never cared for each other, merely stayed out of each others way with the occasional hiss, butt sniff & head whack. I lost one a couple of months ago & soon after the other started looking for her everywhere, & was distressed for quite awhile. The only reason I didn't adopt another was she was having some health issues herself & I was worried about extra stress.
Reminds me of my two old cats backs home! Their names were orange kitty and gray kitty.
That always helps when negotiating.
We compromised and got half a cat.
Get a Litter Genie. It will keep you from resenting your wife when your house smells like cat shit.