That's true, charis, very true...
HOWEVER... the number of times I have been to PS and YA and the rest of these youth functions, the more I see cliques arising, focussing on being loud and noisy (rather than focus on God - all well and good to worship God loudly, not so good when it's just to 'outdance/outsing/outyell' your mates - which I see more of than worship), and people ridiculing you just because you choose to worship in another form.
I don't like the most pit. Not because I don't like to mosh (I do), but because when I went down there in Christian concerts, it was never about God, and all about showing off to your mates.
I find it sad, and as the more I go, the more I see my perception proven, I tend to steer clear.
Please hear me - I have NOTHING against loud music to worship God with, it's all good, but I have issues when I've been there, and just see it all about 'how great I look worshipping God' rather than actual worship. Showing off to my mates about how great I look worshipping God does nothing for me, and it's just too obvious that over 50% of the people there are focussed on that, rather than God.
Just my observation, from years of going to events such as this...
Sasch