The problem is that you don't really have a better option. If you can find a little indipendient store around you then great, but otherwise, pick your poison.
Digital distribution has it's flaws. We all know them, no point in getting into it here.
Best Buy and other big box stores like it are not placed I generally like to give my money to. I'm not against them because of any dislike of large corporations, but you're kidding yourselves if you think they're looking out for you any more than EB or Gamestop is. They may have the most fucked up buisness model/corporate philosophy I've ever heard of.
I don't know why they haven't gotten involved in used games (they were running trials in a few american stores a few years ago), but I can assure you it has more to do with the fact that duping people into buying lower quality products with higher markups and tricking people into buying Monster Cables is much more lucrative once you consider their buisness model. I do know that they make almost nothing off of individual game sales (like around a dollar....if that) and pretty much break exactly even on actual consoles. If I remember correctly from looking around their computers, they do make some cash on some peripherals, but that's about it. I know that part of the model is that they are paid by publishers and console companies for flyer space, and in store ads. They also may sell shelf space, but I'm not a 100% positive on that. A lot of times they get free advertising and such, but the selling of new games isn't all that beneficial to them, even when compaired to CDs and DVDs. I think they do it mainly to get people in the store so they can profile them.
The thing is that as consumers we're pretty much fucked. EB/Gamestop and the like wouldn't be bad if they changed a bit. I remember they used to pay more for used games and charge less for them. If they went back to that it'd be fine. Sure, the people that work there suck, but so do the people that work at most retail places. I don't buy into the whole 'it's stealing from the developer' any more then I think buying or selling used text books, novels, or cars is stealing from their respective creators. It's lucrative and the entire purpose of their existence is to make as much money as possible. The gouging is the problem, but the only way to stop that is to not buy used games for $4 less.
PA is a lot more trusting of digital distribution than I am. I think it may be just because they see it as the lesser evil rather then them being short sighted. Either way, I'm not niave enough to think that games are going to be any cheaper or easier to get. If anything it'll be more complicated, more restricting, and possibly more expensive when they find new ways to work us over just so we don't have to leave the couch.
Personally, I'd love an e-commerce option where I could buy directly from publishers over the internet.