There could be many reasons. Maybe it's the unique and often out - of - the - box storylines that keep you on the edge of your seat. The show is known for its dark and twisted plots that are full of surprises.
It could be the outstanding acting and the unique characters that make you a fan. Also, the way it combines horror with elements of drama and mystery might be the reason.
It depends on your preferences. If you like a more established and classic horror narrative, start with American Horror Story. But if you're open to new takes and spin-offs, it doesn't matter too much.
In 'American Horror Story', 'tainted love' could represent the twisted and often dysfunctional relationships. For example, some characters' love is tainted by their own dark secrets, like the relationship between a killer and their victim - turned - lover. It adds a layer of horror and complexity to the story.