Why I'll never get a pet

You mean unconditional love and happiness for 10 to 13 years, followed by memories that will last a lifetime

Any second of sadness is worth it. As there never is only sadness, it's a wild mixture of sadness and happiness, grief and joy. The joy part is the bigger one. Memories of of a love and companionship that is so pure are what remains, even if you get another pet after some time.

Sadness is only a negative emotion if you turn it into one.