you're missing every single point people are making here, and it's making me wonder why you bothered writing a forum if you can't take the responses. The issue isn't Teemo. Its your personal gameplay. That champion is annoying and irritating sure. But he's not even close to OP. If he were that unbalanced, he would be played in LCS all the time - and do tell me when the last time you saw several pros playing Teemo on a regular basis.
Also, in direct response to your argument, watch a pro game with a teemo in it (if you can find one) and let me know how many traps he lays down actually get stepped on by the other team. Not that many. Why? because they are all going to ward the hell out of the jungle, and somebody if not more than one person will have an upgraded sweeper. He's so freaking easy to counter it's laughable.
on another note
"traps buffed by other items are too strong early game"
.... if somebody has finished building a liandry's, morello, ludens, etc. it's not longer "early game" unless your team fed a lot.