BestBuy has always sucked, and the only reason I'd ever go there is if I'm really hard up for something and I'm willing to get fleeced for the convenience. That's it. They have:
crappy selection
bad prices (I guess they price match)
unhelpful staff (not their fault)
bad store layout (everything I want is hidden in the corner somewhere)
But it's the only tech store in my area, aside from whatever Target or Walmart happens to have, so if I really need a SATA to USB cable or something, it's my only option for same day stuff.
So I'd be a little sad about them going out of business, but not overly so because they completely suck. I can count the things I've bought there on one hand, because the shopping experience is awful imo. I purchased tons of things at Fry's in the 2-ish years I lived near one and had money to spend. I prefer to buy at a brick and mortar (I spend a ton at Target), but BestBuy ain't it. If a Microcenter opened up near me, I'd do all my tech shopping there, but I refuse to shop at BestBuy.