Why do people smurf so much in this game? You're only fooling yourself.
Playing against new players isn't going to make you any better, it just makes you into a half-baked pubstomper.
Don't want to make it sound like I'm pointing you out or anything but I always hear about everyone having a bunch of max level accounts and they just get bored, remake and get easy wins against people who are either other smurfs or new.
The only two games I 'smurfed' in was Rakion and S4 League.
Rakion was because many other people did it. People who don't like pay2win mostly. Some of the higher level cash items have special effects, so even if you played basic mode (lv 1-99, but level 1 stats) they still had these special effects.
So a lot of people just stayed in the 1-10 rooms.
S4 League was just abusing the combi system to get permanent gear. I'd usually play in the free channel unless it's hacker season.
The only time I've made smurf accounts in League of legends was to 5 man premade troll, or to help a new person learn the game without getting dominated by a lv 30 laned against them.