Was I naive to think a show in 2011 billed as “Guns ‘n Roses” would NOT be regrettable? Would my taking an opportunity to capture even a small sliver of the MTV-defined glory of my pre-teen years be a foolish decision? Did I inadvertently put myself in one of those positions where adult curiosity polishes gauzy nostalgia clean to the bone? The question I ask myself is why God, why did I suppress that little voice inside my head telling me not to go to this show? Why did I overestimate those heralded performances of a different version of an Axl-led “Guns ‘N Roses” in which I heard people speak highly about? I clearly remember something about a great MSG show. Why the hell did I think such a thing would be relived in sleepy suburban Colorado on a Sunday night?