We adopt seniors for the exact reason they only have so long and I refuse to let them die in a shelter. Even a few months is a better life. They love give is so great.
Props to you, great that you do that. I don't mean it in a sarcastic way. Really, I think it's a great thing to do.
While I agree with the logic, I know I personally couldn't do that. Maybe too selfish? I hate going through that loss every 10 - 15 years, neverminded every 1 - 2 years.