All of those of you at the begin of the journey, cherish every moment please. The saying the days are long but the years are short is so true
Pissssed 
I know how you feel and still do, on occasion. My DC are all young adults now but I've had one very troublesome teen who still occasionally gives me grief even though they are no longer a teen. Yet a sweeter, more compliant and loveable small child you could not have met.
It's bittersweet for me to hear people moaning about sleepless nights with babies and toddler tantrums and minor issues with young kids because in comparison to parenting teens and worrying about our young adults as they make daft choices, take daft risks, throw away great opportunities, have volatile relationships etc, etc, those are the things which have kept me awake at night over the last few years and all that other stuff was a walk in the fucking park in comparison f you ask me. I often wish I could turn the clock back to when they were all about 5-10 years old which was such an easy and magical time. No exam stress, no hormones, no throwing their weight around at home, no disappearing and turning their phone off when they should have been home.
I am coming out the other side of most of my teen parenting traumas now and I am still sane, not a basket case, an alcoholic or on Prozac although I sometimes wonder how I managed it. 