Yeah... it's got to be something in almost all pilots' DNA.
You said it perfectly... You guys NEED to fly... it's not a want for you, it's so much more than that. I've seen it first hand time after time.
When I say I saw my friends make tremendous sacrifices just to fly, I really believe they would have given ANYTHING. I'll list a couple that come right to mind from my college friends.
One of my best friends in college had to take every other year of school off so that he could work to have enough money for tuition. He would go back to NYC (where he was from) and work 2 full-time jobs as a garbage man. Working 2 full-time jobs doing that wasn't allowed, but he somehow was able to to it without being caught and without killing himself in the process. I don't know how anyone could survive that. It took him an extra 3 years to finish what should have only been 4 years... but he finished somehow.
There was another guy who lived in his car during his entire 4 years of school. He spent everything he had just to stay enrolled... he literally had nothing left for housing. He parked his shitty car in the various parking lots around campus. The Riddle 5-0 (my pet name for the campus cops) even stopped bothering him after his 2nd year of school... and they were normally complete asshats no matter what. Everyone could see that he NEEDED to fly to live... and he suffered every day for 4 years except for each and every minute he was in the air. I heard it from many that he was like a child on Christmas morning every single time he hoped in a plane. I even took an observer flight with him and his instructor one time just so I could see him transform into the happiest person alive with my own eyes. And yep... I was able to hide my misty eyes in the back of the plane.
I swear... many of those guys would rather not live if they couldn't fly.