Oh I'm sorry too! It is so hard to lose them. We're treasuring each day we have with our oldest cat Comet now- 16 1/2 yrs old and he's lost alot of weight this past year, battled a tooth/jaw infection, and may be suffering from Diabetes now. He's such a love, and I hate to think of when he's gone. We lost our 9 yr old Himalayan mix Molly in July, 10 min after getting her 1st Frontline treatment for fleas. (We had the worst case of fleas we've ever had this past summer. ) It was so traumatic, the stuff was squirt on her back and 10 min later she was gasping for breath, bleeding from whatever she gagged up/coughed up, and died within minutes. It is still so hard to believe she's gone... Adopting other animals who need loving homes does help, but we still miss her (and others who have lived out their lives.) Carry on friend, and when you can, get another little kitty to love.
I have one more old one left and about 9 young adults to go. My old one is 14 this year and the youngest is about 7-8 months old. Its never easy to deal with for sure.