Mosh pits are essential to weeding out the unworthy from the front of a show.
Besides, being able to beat the shit out of everybody around you in a totally friendly way is awesome.
Also, comparing bruises and cuts the next day with friends is hilarious.

I'm a very cautious person and that seems dangerous.

Well, you normally get so drunk you can no longer properly process pain before wading into a good one.

So about two beers and I'm good.

Who gets drunk off two beers?

Yeah, I usually hit a pint of Jack for a show.

I was going to explain but teseus did it for me, thank you sir.

People with a metabolism that doesn't process alcohol very well.

2 beers wouldn't even get me drunk when I was 15.

Yeah, but I know someone who is almost 50 and after 2 glasses of wine gets completely wasted, all because his liver can't successfully process alcohol. And that man is a frequent drinker and he is about 95kg and in pretty good shape, yet after one beer he already gets dizzy.