Sure, but you can also direct all that time, money and energy towards something much more rewarding, with real and very probable chances of succeeding, instead

Sure, but you can also direct all that time, money and energy towards something much more rewarding, with real and very probable chances of succeeding, instead of string of little failures to win for rest of your life. For example I have a long term dream of being self-sufficient paraglider, Icarus dream and all that. I live in a country where its hard to have full course (2 weeks minimum) unless you speak fluent french, which I don't yet. I have 2 tiny little small kids. I have had some recent injuries which delay/block similar efforts. But I didn't give up, waited patiently till suddenly I had a window for the course. Did it, and now looking for spring to continue the momentum, whenever family situation allows it. Some other activities would be much easier (and cheaper) to get into. But somehow I knew and felt that this will be very rewarding for me, combining hiking up and flying down the mountains. I don't call them dreams - those are rather impossible situations like me free floating on ISS looking a dark space around Earth, stars, moon and milky way. Or winning lottery. Goals is much better term for me, there are clear actionable steps to get there. Compared to this dream, paragliding is peanuts to achieve.