Originally Posted by Leaning Snowman
It's actually the main reason bots can beat you when you first start out. Bots are SPOT ON when it comes to last hitting, and buy items quicker. You basically need to curb-stomp them in order to make more gold than they do.
No matter what their farm and kills, bots will always accumulate the same amount of gold at the same rate. This is done to alleviate pressure on newer players that haven't mastered the game, and to ensure experienced players don't automatically steam roll them.
The bots are buying items faster than you because you don't know what you are doing yet. They do not earn ANY gold from assists, minions, objectives or kills.
Please do some research before posting inaccurate information.