Why do people need someone else to tell them something is viable?

I like doing out of the meta supports. Such as anivia, liss, teemo, and kennen. The first 3 90% of the time ill get called a troll when i do them(get called a troll cause i go bard too)i did kennen support before he was played as a support in the lcs. And before that happened everyone raged when i went him too yet when he is seen in the lcs suddenly hes a viable support and people whove never played kennen before suddenly wanna do kennen support and think theres nothing at all wrong with it. Why cant people just make there own meta and do what works for you instead of thinking that anyone who doesnt play whats in the lcs is trolling. Yes the pro players are pro for a reason but they are pro cause they did what they liked best not cause they were a copy cat of someone else. Like play what you want and what works for you dont be an image of someone else. Like yes there are limits. Adc vlad probably not the best idea..but still