Gaming Rig questions

Sound defines 50% or more of the gaming experience, why dont any of the builds have dedicated soundcards included?

The integrated sound cards in motherboards generally are adequate for everyone except hardcore audiophiles.

Because motherboards usally have good sound built in nowadays.

I have my board sound runnig to my technics seperates with a 3.5mm jack to phono lead 

[img]http://www.tvcables.co.uk/images/items/3.5mm-jack-phono-cable-1m.jpg[/img]

My neighbors love it when i play battlefield 3 ^_^

well do i feel stupid :c...

We were all noobs once.

I have a sound card because I game with headphones on.  I like having the headphone amp.  The new Creative cards have there own processors on them.  They claim it frees up any processing power taken away from your cpu.