First of all I am 24 years old. Please don't make it sound like us younger people have no responsibility. If you must know I myself am a service manager for a large elevator manufacturing/service company, i've got a wife and kids and I think of myself as very responsible. As for the 10 or so employees that we have between 18 - 24 they are also very responsible.
I agree that there are a lot of younger people like you describe but they will grow up soon enough. and the reason they are probably working at TH is because nobody else will hire them.