I think it depends on where you are. I used to live in a rental condo complex where 90% renters where employees in a technology leader with a facility nearby. Wi-Fi was everywhere, and virtually *ALL* channels where in heavy use, degrading the signal quality. Even had to bring back an old AP running 802.11a to avoid channel competition. When I bought my house the decision was really simple: go wired all the way, but only to bedrooms and places with longer stay. The back porch is Wi-Fi, though, so we can use laptops there when barbecuing and all. So, the solution to tis problem is kinda mixed, in my case at least.