What age are you?
I have been playing this game since season 2. With that said I have seen the many changes in this game ..gameplay and the community.
But to me the biggest change has been the community.
Why "do most of you" feel the need you have to just be rude and nasty? I mean did you have a bad day at school? did your dog die? are you pmsing?
if that be the case maybe you shouldn't play this game and go play a solo game so you cant put your bad energy on other people who want to have a good time playing a game with a TEAM. Yes I said it a TEAM last time I checked this was a TEAM game not a solo so your kill count ....is not the objective of the game. Last time I checked if you are on a TEAM in person you dont get in your other TEAM MATES face and say "YOU IDIOT WHAT ARE YOU DOING".
If you rage in a normal you have issues if you rage in an aram you have issues and you need to work them out we all don't want to be in LCS and we all dont want to be a play hard monster drinker stuffing Doritos chips in our face toxic players.
In rank if you rage at your TEAM you again have issues. let me break it down for you.
In ranked you HAVE TO WORK AS A TEAM if you want to win. Everyone is so focused with kill count its ridiculous if you want that go play CSGO
when people get upset what happens??? they don't give 100% so you raging and being toxic are causing yourself to lose the game. that my friend just makes you look like the idiot.
those of you who feel the need to go in all chat and say "GG REPORT TOP FOR FEEDING AND BEING TOXIC" this is what I see
"MOMMY JIMMY HIT ME"
AGAIN if you are over the age of 12 and you do that ....I feel sorry for you and you need to grow up. if you insult your team mates again you need to grow up and work on your behavior its not acceptable, Just because you are behind a screen.
it dosn't make you look cool ... Im pretty sure that wont get you a girlfriend or a boyfriend ...and you are just adding more cancer into this world.
Watch what you say ...if you want to be a good player be a team player . if you have nothing helpful or positive to say dont say it at all. you should be playing not typing this isn't IMVU. 
Feel free to add me in game if you want to play with people who are actually nice and want to enjoy a team game.