hahahahahahaha...NO!!
If you provide the right food, temperatures, and care, they'll live for YEARS!!
Since I've been keeping goldfish, I've only lost 2, 1 was eaten by my bullhead catfish baby, and the other was blind when I bought him, and his problems just kept going down hill.
I've started adding a touch of blackwater (1/2 strength) and it makes their colors POP!!