It’s easy to fret that the glory days are over for the Strip — the wellspring of our economy and icon of our global identity. After all, so much is going wrong. The slow, semistagnant recovery from the recession. Intense competition in the U.S. and abroad for gambling dollars. Aging Baby Boomers spending less. People seeking gaming venues closer to home. And, if only symbolically, the likelihood no casinos will be built for years.