Don't worry, you won't be at your funeral. you'll be dead.
Funerals are for people to work out their feelings of loss. Trying to force them to be happy defeats the point. So no, I don't think the funeral itself is pointless.
Now all the money that's spent on a corpse, THAT I feel is ridiculous and pointless. Thousands of dollars for a big metal, pillow lined box to put a stuffed dead body in is ridiculous.