I don't know what people are thinking now, but I have never shared accounts with anyone on any game I was playing. The only time I ever gave anyone access to any of my gaming accounts was when I was completely done with ALL accounts for that particular game and was never going to come back. If those accounts and all accounts associated with them get banned for account sharing, why would I care?

If I care about a gaming account, I don't want anyone else to do things in the game that reflect poorly on me or make bad decisions with my account's items. Though there aren't too many ways this can happen in PPS, it's certainly possible in some of the other Nutaku games and the only way I can be sure is to be the only one to use my account.