Why so much RNG? What are the benefits?

I want to win fair and square and walk away understanding I won the game all by myself, not because of an arrow.

Can someone enlighten me as to why the developers of a game - based on knowledge and skill alongside how to outplay your opponent - decided to put SO MUCH RNG into the game?

-Arrows
-Starting initiative
-Hero placement
-Creep spawning
-cHeAtInG dEaTh
-Bounty Hunter
-So many other cards based on RNG

Why? I’m not flaming. I promise. But WHY? Can someone explain to me, since clearly I’m probably a brain dead monkey, WHY there is so much RNG in this game?

Why not just make the game SKILL BASED, not RNG based?