The trend to stay indoors away from risk of any kind has created a vacuum. Ask any tree care business owner what he lacks most and he'll always moan about the scarcity of skilled climbers. They are so hard to locate. A sober climber that understands the needs of a tree is a rare bird indeed. The best thing is to nurture your interest in trees.
Interest is a fickle thing.
It's like starting a fire. First one must have an idea, or a match to get the blaze started. The next step is to feed that idea with interest. All worthwhile undertakings start with interest. But that tiny flame from a match quickly dies unless more substantial fuel is added.