OP, many younger people regard it as normal to do A'levels and a degree, not actually making it into the workplace until they are 21 or 22.
I'm 60 and already have 43 years NI paid. Eight more than I need to claim a full pension. I've no plan to retire yet so if I work another 7 years I will pay 50 years NI.
I've paid higher rate tax for 34 years. Not worked part time when I had small children at home, nor taken a 'gap year'.
At what point does that justify my state pension in your mind? How old will you be when YOU have 50 years NI paid?