Hey Ridik: You are a complete idiot with 100% worthless arguments.
1.) Yeah, most people have internet connections. Most people have wireless, I get it. What about when traveling? What about the military who is ALWAYS traveling? What about those in areas with no decent means of internet connectivity? Thanks Ramar for pointing out that soldiers don't always have internet connectivity, as I am in that position now. I have no way of connecting my laptop to the internet, and it's far easier for me and a few guys from work to link up and play a game of LAN. Oh wait, by your logic, I am on the internet, so obviously my I can play online... I guess you've never heard of internet Kiosks, the MWR's for deployed soldiers, or hell, even just going to a friends house to use the internet. Being able to access the internet doesn't mean being able to access the internet on your person computer.
2.) Most lan parties of that large of caliber are just hosted in an open hangar or warehouse. So yeah, some work will have to be done to make this acceptable for large LAN's.
3.)WTF is your third point? I don't even think you know. This is no "fix" and again, internet isn't always an option.