Having been in construction for most of my life, I can tell you many I worked with wasted their time and money on college only to end up working next to me.
My father was a tradesman all his working life. All five of his sons worked with him growing up, playing gopher and what have you, hauling bundles of shingles up a ladder on our shoulders. None of us followed in his footsteps, hehehe. Maybe that was his plan?