This. Oh my. You hit the nail on the head. I have encountered some very rude people who should of known better to act their age, but did not even come close.
Glad you said this as i planned on posting something similar. Its possible for someone who is younger to be wise and someone who is older to be immature. It depends on your maturity level not how old you actually are. thumbs up to you for getting to posting that before me XD