Plano is a typical suburbia town. There really isn't too much to do here, especially if you are young. Everything closes down pretty early, and because it is a "dry" city most young people here have a hard time finding a place to socialize. If you're looking to settle down at a nice, quiet, and safe place for your children I think it's a good place. Those who are young and wanting to meet new people, this is not the place to be.
There is a patch...a small patch..of land off of legacy and 121 where there is a place to hang out after hours (that's 9pm) with restaraunts, and nice shops.