Its because every sport and specifically ones with American fans tend to harbor some of the shittiest bro guy douches around. The people who hate on others who enjoy wrasslin are just bro guy douche bags who will cry when ESPN publishes an article about WWE or esports because they just love being salty bitches as if it even matters are ruined their day in the slightest.
Listen, MMA is my favorite sport, surpassing Football which was number 1 most of my life but before I was a big sports fan I watched wrestling and to this day still enjoy it for better or worse. Are the story lines cheesy? Hell yeah they are. WWE is about entertainment and that is what people who watch it seek. Its scripted, everyone knows so stop trying to point it out as if you discovered some sort of revelation, but the guys and gals in that ring put their bodies on the line multiple times in a week ,all year long, every year and they take bumps ALL the time and they don't see their families often as they are on the road most days.
And like I said, yes its scripted, and yes most of what they do is fake but like I also said they take hard bumps and sometimes take it even further for peoples entertainment so when you want to say its all just fake, as in their performance and not the outcome(because its fucking scripted) try to think about guys like Mick Foley who has dementia, has broken dozens of bones and received hundreds of stitches for wrestling, or guys like Daniel Bryan, Edge, Stone Cold and many other guys who have broken their necks and the concussions they received. 3 top guys are sidelined right now, Seth Rollins blew out his knee(ACL,MCL and Meniscus), Randy Orton needed shoulder then neck surgery and John Cena hurt his shoulder and required surgery too. A week ago 2 female wrestlers at a WWE NXT house show were hurt, Ric Flairs daughter broke her nose and another woman was kicked in the head and got a concussion.
Moral of the story, Wreslters put their bodies on the line for peoples entertainment, they do some awesome shit in that ring and thats what most if not all people tune in for. You don't have to like wrestling but you also don't have to be a bro guy scumbag and act like assholes towards wrestling and the people who enjoy it.
PS Fuck you bro guys, eat a dick