I would agree that 15/16 is the age most teens are ready. Some are not yet at this age. It depends on the maturity level. If they are mature enough to understand the responsibility sex entails and are well educated about contraception, risks, safety, trust, respect, and reciprocity then they should be given the freedom to choose if and when they are ready. But I would have a hard time believing that a 13/14 year old is ever ready becuz as previously mentioned puberty is really unsettled still at this age, well usually.
It depends if phiscally your ready meaning you have your period or the male = however you have to be emotionally ready to its best to wait tell the worst of puberty is over since your hormons make you a reck you also need to make sure you able to do it safely expecially if your young since the males sperm is strong make sure you have a condom and birth control and it always good to be tested if you all set you also have to worry about weather you have a partner who is ready to but age wise 15/16 at the youngest
According to parents, not until the kids of are legal age, such as 18, or (depending on one's culture or religion) until they are married, or both. According to kids, younger than that and marriage is not part of the equation when a teenager. Kids always think they are more ready than they are. The brain keeps changing and developing into one's 20s, and who one is at, say, 16 is not who one is at 21 or 23. Lots of adults (especially women) say they had sex too early as a teenager. Peer pressure comes into play and it's not just about someone having a healthy sexuality.