Why you think it'll work: You like to party. You like music. You know how to press play on your laptop.
Why it won't: The DJ market is the most saturated in music. Dance songs have dubstep remixes of mash-ups that some DJ club edited. Why? Because every loser with a pirated copy of Fruity Loops Signature has imposed themselves on the scene.
Using a laptop used to be frowned upon in clubs, now it's the norm. Since the ability to start a playlist miraculously grants a free pass to hump Eastern European babes with glitter on their cleavage, everybody wants to be a DJ. We don't blame them, that sounds like a pretty good job perk. Unfortunately, it's the only job perk.