I think Heimishe Yid has a very good point about neighbors effecting our wants, however its not always so easy to control.
We once had a story where there was a chalav yisroel ice cream truck coming down the block every day. And every day kids would run to their parents for money to wait on line and get an ice cream, parents felt bad since the weather was hot and e/o was going. Until one mother got really annoyed and made a huge fuss telling the ice cream truck driver that he can no longer come down the block every day, maybe once a week.
Major debates broke out…R we responsible to remove our children from temptations- or should they be taught just bec she gets an ice cream every day, it doesnt mean that i need to get one too!