DPS why don't you know your rotations?

[Ayer2015]

"Oh look, i have these Skills..."
"Hm, they might work good this way..."
"Okay, i do it this way!"
[...]
"Guides? No thanks, i stick to the way i think it works best. I am not a hardcore player."

That's how I play.... I don't need someone else to tell me how I should be playing a game. It's like reading walkthroughs to finish an RPG..... why?