Agree, and I've never argued with anyone as to whether bitcoin is legitimate.  Either you get it or you don't. 

Most people I talk to are roughly my age, which is probably over the average age of the typical bitcoiner.  There is no need to try to convince them that bitcoin is worth investing in, using, or whatever else.  It is going to be the current generation, the millenials and the ones that come after them, who will be responsible for bitcoin's success or failure.  Chances are that they'll understand bitcoin and carry it forward, just like any new technological advance.  Hopefully they'll find a cure for cancer as well, but that's another story.