Flaming is good/bad, but why?

Okay I know that everyone is going to downvote on this, but let me explain on why it is both good and bad. First off when flaming someone it helps relieve your stress and helps know that the person (feeding, getting gank so easily, or not knowing their champion) that they suck plain and simple. Now the cons for this is you look like an asshole, you trigger someone, and you start a flame war. So, what you need to do if you are being flame at is mute flamer (which no one does or they do but says to the flamer "I'm muting you." which defeats the purpose of don't respond to the flamer rule). Also, have a adaptive/flexible mind, play smart, and play safe when you are losing lane to at least prevent getting flame on. Also to the person getting flame at try to understand their reason on why they are flaming at you like maybe you need practice more on that champ in Normal match (this confuse me a lot especially to those that play a new champ they aren't experience at and decides luck will help win their rank game), might want to play safe especially when you are getting camp and getting killed by it, you may also want to farm up if you are behind on kills or have more deaths, and use your pings because if you are losing lane especially in mid lane the enemy champs will roam on to other lanes. At the end of the day this game really doesn't reward much and if it does it just make things worse to flame especially this Promos system where it doesn't makes sense you get group up with players that aren't in promos. Why can't you group up with other promo players who you know will invest and play smart/safe because everyone is in the same boat? They either need to fix that or remove that system.

Last note, if the person is flaming let them flame/ mute them if you want might as well let them let out their stress and do yourself a favor and play well enough, or learn your mistakes and fix them.