I've done the white collar route and still can't stay away from plastering. I started in construction doing carpet and flooring but I quickly noticed that I've never seen an old carpet/tile layer or one that was at it a long time who didn't have knee or back problems. Then I went to framing/roofing and those trades beat you down too but I noticed the plasterers inside and that crew was all 50+ yr olds who were very fit and healthy. I decided I wanted to see what that was about and I fell in love with the trade even when I started doing office work full time I still loved to be on site working with the mud. Do what makes you happy man but if you love what you do you never really work. Office stuff was work to me, this is a passion. Why wouldn't I want to share that with my son? (If he doesn't like it I'm cool with that too. Everyone has to find what they love, I'm just glad I've found it for me.)