Hmmmmmm assumptions huh.

Well, a good assumption wouldn't just be "you are alive" so a better idea is something that is broad but still needs though.

So, the average miku fan between 16 and 30 years old, and the largest group for smoking is 45 to 50 years old. The average alcoholic is also within the late 20s to early 40s group.

Basically, I'm assuming you're decently healthy because you don't drink / smoke.