The trades will ALWAYS be in demand. No matter where society goes, as long as it doesn’t collapse we will need running water, electricity, toilets, transportation, etc. I went to college for bio, switched to CS, graduated with business management degree and now I’m a mechanic. The hope is one day run my own garage perhaps, but untill then I love comfortably enough and know I can walk out tomorrow and find another job before I make it home.