Well, turning 16 is a very important age of your life. I'll give あなた a few reasons why~
1. It is the age when あなた can get your drivers license and get to drive, so that means a little もっと見る freedom since あなた don't have to wait and schedule to get a ride to go somewhere, あなた can just give yourself a ride.
2. あなた are old enough to be able to apply for もっと見る jobs, since very few jobs hire people under the age of 16, and that means あなた can get もっと見る money for shopping! XP
3. Everyone is excited for their 16th birfday because they can have their Sweet 16 which is usually the best and biggest party of a person's teenage years.
4. Last but not least, when あなた turn 16 あなた are legally allowed to consent.
Originally, when a woman turned 16 it was her coming of age and her family would celebrate that, then marry her off, but sadly the modern age has transits he'd it with spoiled daddy's girls who have their parents wrapped around their little finger. So way back when, it used to mean something now it doesn't. :(
Well, it's different in some countries, but where I live, sixteen is the age where あなた can marry (if あなた have parental permission), consent to sex and drive a moped.
The 年 あなた turn sixteen is also the 年 あなた take your final secondary school exams (GCSEs) and the 年 secondary school ends, so あなた can choose whether to do an apprenticeship, go to college または go to sixth form (which all last another two years).
Sixteen is also supposed to be a もっと見る mature age than thirteen, fourteen または fifteen, and so generally あなた are trusted もっと見る and 与えられた もっと見る respect than younger students at school (if あなた deserve it - if you're an idiot they come down on あなた even harder than ever because you're meant to be setting an example for the younger students).
There is absolutely nothing special about being 16. You're still forced to abide によって your parent's rules, your driver's license isn't promised, everyone's still an asshole, and there's a fuckton of pressure not only from your peers, but also from your family to make great grades so your GPA is high and あなた can maybe get a scholarship. Being 16, fucking sucks for a lot of people. But for others who have it made, it's probably the best time of their lives.