Playing at 180 ping has ruined playing at 40 ping for me.
I usually play around 120-200 ping, and I made a LAN account, so I had about 40-60 ping... It seriously felt like a different game, every time I was killing a tower, trying to kite around it like a total 1337 pr0LCS, I kept cancelling my auto attacks because I was predicting the ping.. Like, how can people say ping doesn't make a difference? I kept missing CS because of the compensation I usually give myself for ping... kiting is so different, there's so many nuances with lower ping, I just... like.. wow.