When will you people "get it"? It doesn't matter how wonderful the architecture is, if an airport is in the wrong place, it won't succeed. And Stansted hasn't succeeded. Take away Ryanair and see what's left - not a lot.
Why take away Ryanair? Because they are at STN only because the BAA offered them a subsidy in the '90s and now they can't move out because the capacity isn't there in the London area.
The nicest airports to use are small, friendly ones that few people use. Teesside, anyone?