If you can't stop the (possible) coming disasters, what's the point in paralyzing yourself with fear? Do what you reasonably can to prepare, and enjoy the life that you have now while it's here.
Things will certainly get worse, and disasters will happen in the coming decades, but the end is not right around the corner. The decline will be slow, and it's still possible that solutions, or at least mitigations, will be found. Look for little ways to contribute something positive, and try to appreciate the moment.
What's the point of comparing it to flying? That's completely meaningless. There's no possible building material that is "climate friendly" while we're still using fossil fuels for industry and construction. The only question of significance here is wether wood is more sustainable than other forms of building material. They make no attempt to make a comparison to the ecological impact of metal or concrete production.