Lol 15 years old I play all the time and I've got a 4.3 grade point average, I play baseball and soccer for my high school, and I've got a girlfriend. I also have over 500 hours in the game and have 2 34s almost 3 and I have gone flawless 9 times in trials. I'm almost at a 1 million medal score as well and I've played crucible with some of the the top crucible players in the world, like tomcatchi, who on a daily basis, streams to over 300 people on average. These top players are almost all adults and not once have they ever commented on me being annoying or having a lack of maturity to play. To sum it up for you, it's not about the age, it's about the maturity one poses. If you are a father, maybe teach your kid that a game is a game and what happens in destiny is far from what should happen in real life. Teach him that is important to be well rounded and to try and balance his time between destiny and other things. Play destiny with him and use it as a father son bonding time where you teach him about the game. [spoiler] the game isn't rated mature so I don't why u said only adults should be able to play the game[/spoiler]