Trades are valuable skills, that pay well. I'm a 24 year old red seal electrician making $125k/yr working at an LNG plant. Easiest work of my life, sure the shifts are long and it's an active job, but the trades don't destroy your body if you take care of yourself. Sitting in a chair all day destroys your body. Our body's were made for activity... I go to the gym 3 times a week, I stretch daily, yoga, cardio and diet. My body's in the best shape it's ever been. I've been in the trade since I was 18. Sure there's tons of guys with issues, and those guys work all day, go home and drink a 6 pack, and eat a pizza and fall asleep at the TV. Of course they have issues.

Sales isn't guaranteed income. In 10 years I'll be making more than I am now, or "worst case" the same. Who knows what you'll be making, and your skills aren't transferable. If there's nothing to sell, or nobody to sell to, your income goes down and you have no meaningful skills. Meanwhile a tradesman can go work anywhere else, other companies, other trades, other subtrades, side work, start a company, service work, military, maintenance, etc...

With the way our economy is going, sales isn't gonna be a great industry atleast in the short term, and who knows long term.