why do some people think that a film has to be funny to be good?

once someone on yahoo said they didn't like how to train your dragon
and gnomeo and juliet cause it isn't funny. and then my friend told
me that he had seen how to train your dragon and didn't like him and i
asked him why and he said cause its not funny then my other friend the
same thing for the same film.

and the film did make me laugh
trolls steal your socks but only the left ones
and
stoik: when we crack open this Mountain all hell is gonna break loose
gobber: and my undies good thing i brought extras.

so its a tiny bit funny and so is gnomeo and juliet.
hes a blue
and shes a red
and pink
and
is that you
yer it me
and me too

that bit a little funny it scares them to bits

so why do some people think that a film has to be funny to be good