Opposite experience for me, we went from 1 to 3 cats by adding the new cat every 6ish years.
Didn’t really do anything special, just brought the new cat home and that’s it. Maybe has to do with all of them being from the same breed (Oriental shorthair) and the specifics of the breed itself
Same feelings here, I used to average around 1k hours per year in my “active” years.
All of the issues with CS2 kinda put the end to that, played the beta, then stopped for a year, and now I play few games every few days