What do you feel that you are giving up? Physical boxes, the ability to sell the game to someone else if you wish? I'm just curious.
Yes and yes, as well as the assurance that I have the media indefinitely, should unforeseen circumstances arise where Steam shuts down, the ability to install it at the speed of my CD drive and not my internet connection, the ability to choose from patches to install rather than it being automatically updated (how many patches have we seen over the years that have screwed the game up worse), and the list goes on.