age and maturity

does age go hand in hand with maturity? does age equate to maturity? i'm refering to maturity in thinking here, not some other maturity. if thats the case, why is it often not the case? especially so in the army. people whinging about having to tahan this and that kind of shit, everytime kana all the shitty things to do. its not like they're the only ones stuck with it. everyone goes through all kinds of shit, unless you're some big shot's son. why not just suck in everything and just bulldoze your way through the 2 and a half years. over the past few days, i have come across people who are older than me, yet cant keep their emotions in check when it comes to serious matters. they think they're entitled to this, entitled to that; that the world owes them a living. i dont know what will happen to them, but its pretty obvious to me that they'll be going nowhere if they refuse to wake up and grow up.