For some odd reason, people tend to love dramatic and dangerous activities that could mean their life comes to an end. Roller coasters are quite dangerous, but they are also incredibly thrilling and adventurous. The adrenaline release that most people receive when riding one keeps them coming back for more again and again. The freedom to do such an activity is also quite the motivator, so most amusements parks receive millions of people every year for those attractions. They keep getting bigger and faster! Here are ten of the most insane roller coasters ever built.