Yeap, it's really sad...
The truth is, grolelo, they don't even think about it.
It's like a parallel mindset. When I started exercising I started paying way more attention to what I would fuel my body with. You start tor really care and a "shift" happens.
These people simply don't care, they are all for instant gratification, not thinking in the long run... then they get health problems and blame it on genetics.