Don't you think smurfs are bad enough? Being a new player to LoL, I am always in matches with at least 1 smurf, who has had a LOT more experience in the game than me, meaning I get completely stomped all the time. How am I suppose to learn anything if I just get destroyed whenever I try?
I know that you can play against bots, but that doesn't benefit you at all. You may learn to get decent CS against a bot, but when you go against a player who constantly pressures you and the lane, what you've taught yourself in a bot game because completely useless, meaning you've wasted your time.
I've spent weeks playing bot games to the point I can almost get perfect CS on an ADC, but the second I go into a normal game, I get completely destroyed and stuggle to get CS because the support takes it, or the other ADC has completly pushed me from lane.