playing football in controlled conditions is much better than in the pissing rain or snow where the pitch becomes a quagmire and ball is flying everywhere.I don't like all that stuff going on with the roof. All those wires etc.
I don't really see what the point of a roofed football stadium is, other than to benefit other events such as concerts, but from a fans perspective I don't really get the 'U2 could play his stadium and not get wet!!" as a 'wow-factor'.
Roofed stadiums are an issue because of pitch qualty, but with the aufschalke and the sapporo dome, the pitch slides out and gets the benefit of natural growth, wind, sunlight, etc. Then it gets wheeled in for the match.
My ideal stadium would be of this model. It does demand lots of space and is quite expensive but superb nonetheless.