> now i suspect that you simply don't know anyone who does blue collar work.
Incorrect.
HVAC, plumbing, elevator repair, landscaping, painting... These are all careers in my family. My dad was the only white collar of four brothers. Grandpa was AC/Refrigerator repairman.
> Able to support a family? Not without a secondary income from a spouse.
now i suspect that you simply don't know anyone who does blue collar work.
can all blue collar work support a family easily? no, but neither can all white collar work.