Because I like music.
This is a DJ. Not an MC. I had to read the difference. Apparently, an MC talks to the crowd more whilst a DJ doesn't. That's what I like from people who play music in clubs. To shut the fuck up, and play music in clubs.
The DJ at a club I used to frequent would keep scrap paper and a pen near his set for you to write requests. Now, whilst I consider myself to have a pretty decent taste in music, there were times when the songs I wanted played would be signed with an apology.
Drunk, out with friends, big dance floor... you know how it is. Sometimes Sk8er Boi is appropriate.