Why will it take us another decade to do something we did four decades ago with less technology than our kids video games?
Because the Saturn IB/V was a meticulously engineered, hand-built, ground-breaking piece of technology, and most of the people who built them are retired or dead? And that even with most of the material, economic, and sociopolitical resources of a *planet* devoted to making it succeed, none of them functioned flawlessly, and two out of twenty failed spectacularly?
Truth be told, if money was no object, we could have a man on the moon six months from the word go. We haven't been back because collectively, for better or for worse, we don't want to.