Making '50/50' games puts too much weight on personal skill.
I have been playing some Bot, and doing very well. But despite this I am still losing quite often. My experience seems different than everyone elses, as in the better I play the harder Riot makes it for me to win. Yet when I check other peoples history, they win most every game in which they have a good output. Overall in Feburaury I have a kda of 5.75 as bot yet only a 43% win rate. Also my game times are absurdly long, because usually the backline is just holding the fort delaying the inevitable... match after match. It's not like I am in diamond, consistently playing very well in bronze shouldn't be so unrewarding. In a typical game my team does random stuff and dies a lot while I am busting my tail to keep us in it, while staying positive.
I can rarely play with other good/normal players in Bronze. This is basically just a rant.