Why do sony still use disks

[Showertea]

Undying said:

d21lewis said:
Sony has four systems on the market, and no two of them have used the same format. CD's, DVD's, UMD's, and Blu-Ray. Maybe the next Playstation won't use discs. For now, I'd hate having to download, though.

Digital distribution won't catch on until it becomes more convenient than driving to the store.

 

 

I doubt it'll happen even then, as I find it way more convenient to do that already, but nobody'll give me the option to DL full length games.