I genuinely feel bollywood should stop making sequels

I don't understand why bollywood is so obsessed in making sequels and ruining the original movie like directors don't have any script or work so they start making sequel even when there is no need. For ex Aashiqui 3 like why is it even necessary to ruin that gem . Why director is so obsessed with Kartik Aaryan ruining every original movie.Bro's whole career totally depends on sequels. There was no need for BB2 and 3.