Well I did that. I bought it at the store in a physical copy.
I just didn't realise the dvd had to be in the drive every time I play the game, so then I started to think the download may have been better for my netbook.
It's ok when I'm at home as I have my external dvd, but it's a netbook, so I move around a lot and would like to be able to play the game then also.