I know how empty your home feels now. I have two cats now, both I am sure will outlive me. I wasn't sure about getting them because I didn't want to have animals around that would outlive me.., they are now 5 and 6 years old. Since I live with my son and his family for the past 2 years, the cats have learned to be very social. Family loves the cats too, so I don't feel bad about them if something should happen that I won't be able to take care of them. Your cats had lots and lots of love and sounds like they had great and interesting personalities. If you can maybe you could think about adopting a "Senior" cat. I send you best wishes.