meh, everyone does something stupid when they're drunk. Charlie Sheen is his own brand of crazy, though.
1) Not "everyone" goes on vacation to a major crime-ridden city and then gets hammered, and staggers around the streets at night. Some people have a LOT more sense than that...
2) Not everyone who does occasionally get drunk does stupid things while intoxicated. Some folks are very introspective. Some just like to hang out and "people watch".
It has long been my opinion that "booze doesn't MAKE you do anything, it just ALLOWS you to manifest your deepest natural tendencies. Some folk become introspective, some become boisterous, some are silly, some are jolly, some are very sexual, and some are just violent, raging a-holes...
It sounds like deep down, Cage is in that last group...