Re 1, at least in the US, it's very dependent on market and path.
I have two family members who have been pipefitters for 20 years. Both make more than I do as a software engineer. Another is a doctor, and makes more than they do. But another does boat repair, and makes more than the doctor.
If the last decade is any indication, skilled labor - especially those not afraid to own their own business, are set to make a killing. It's nearly impossible to even get people to come out for normal household jobs anymore - they're all way too busy with more lucrative clients.
I have two family members who have been pipefitters for 20 years. Both make more than I do as a software engineer. Another is a doctor, and makes more than they do. But another does boat repair, and makes more than the doctor.
If the last decade is any indication, skilled labor - especially those not afraid to own their own business, are set to make a killing. It's nearly impossible to even get people to come out for normal household jobs anymore - they're all way too busy with more lucrative clients.