My brother is the same; he is a captain for a major airline and makes a couple hundred thousand dollars a year. He became a farrier (horse shoe-er) to put himself through flight school. Without the degree it was more difficult for him to get hired by a major airline, but after he had a dozen or so years flying for regional airlines; he got hired. He is one of the most hard working person I have ever known.
Neither my wife or I have degrees and have both done well also. Until I retired I was working as one of the leaders of a hazmat team which required knowledge, technical understanding and judgment to make the proper decisions in a timely manner.
I think at one time having a degree actually did mean something, but as our colleges and universities changed their mission from teaching marketable knowledge and skills to indoctrinating impressionable youth with leftist ideas the value has decreased as the costs increased exponentially. I think that many more people are deciding these days that value of what they are being taught is not worth the cost.