I played unranked since I finally finished my calibrations matches and another 10 or so and I have fun all the while picking whatever I feel will work or what I'm good at, I maintain a ~52% win-rate, sometimes dipping into 53%. The losses don't seem so bad and a good fight seems to be the norm.
The moment I boot up ranked and get put into a game my team is all from South America who speak no english, constantly yammer into the mic and insist on sitting on the enemy side of the river alone or in precarious positions and the lead I had for the first ~20 minutes of the game dissipated almost instantly.
I don't generally add any vitriol to the game, and I didn't that one either. People make mistakes, miss skill-shots, miss pulls and get jumped in seemingly safe spots; but then there are times when you're just being dumb and almost actively ruining the game.