It's ridiculous. Our dog lived with us for almost my entire life and was a huge part of the family and we all were devastated when we lost her two years ago but we didn't have a funeral for her.
Also, we live with a field (full of coyotes) on one side and a busy road on the other, so in 15 years we have gone through like 20 cats. I don't get attached to them anymore... (And before anyone gets mad at me, I tell my parents every time "DON'T GET ANOTHER CAT" but they always do for my youngest brother

)