Sorry to hear about your loss. Boris, my oldest, passed last year at 12 Y.O. I sometimes question the morality of keeping indoor cats, then I am reminded of this. There are a lot of outdoor cats where I live (city) Few I see more then a couple of years. A good friend of mine lost 3 older cats in just over a year. They become part of the family and their loss is every bit as real.
Butch