How does that compare, I wonder, with any other hobby that people take up - be it ballroom dancing, sailing, judo, pigeon fancying, whatever....
The fact is that human beings change their minds about what they want to do. I'm not saying there isn't a problem, merely suggesting that flying may in this regard be no different, and we who don't give up are the oddballs in some regards. (I've certainly given up other hobbies over the years for that matter, I was one of the few hundred best in Briain in a particular sport and starting to look at becoming International until academic studies then flying took precedence.)
G