
Kenneth S. answered 03/08/18
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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018
I nominate peer pressure and immaturity as big reasons. With poor parenting, and a false sense that getting drunk is fun and/or funny, some elements of society may see this as a viable experience. Also, there can be aspects of predisposition to addictive behavior.
I'm fairly sure that you can find a lot of research online.