Why are there critics in the first place?

i dont even see the point in them, its about peoples opinion of the film, not the critic.
What the critic is basicly doing is being himself, an asshole, hes trying to make people avoid the film kwa saying its sexual, au its a waste of money. that is an outright lie, cause a lot of people liked the film, i mean look how many mashabiki there are! 399? thats the kind of respect this movie needs!

if there is a point in critics, i would upendo to see what that is