I remember taking an HVAC course after highschool. It felt like a two year natural gas and refrigerant propaganda course. It was confusing.

I left that career behind pretty quickly after completing that course. The last bit of motivation to leave was seeing and hearing how other HVAC technicians were ruining their knees and backs.

Damage the planet and my body for money? I don't think it's worth it...

I wish I can say I made smarter choices after that but instead I learned some more tough life lessons the hard way.