I turned 21 a while back, and no, it is NOT as good as it seems. I am finally 21 and legally able to do everything I've been doing since I was 14. The downfall is the fact that being an adult sucks. Work to pay for your car, house, etc. so that you can keep going to work to pay for your car, house, etc. so that you can keep going to work and so on. Embrace your teenage years and make sure you have as many parties as possible, because when you try to party when you're an adult, it costs you a shit ton of money and then you have to go to work the next morning feeling like a pile of shit.