They're not doomed but they'll be burdened with living a "half life".
No energy, No motivation... Just existing on junk food and pulp TV.
What can we do to change things? Not much I'm afraid.
It's actually cheaper to buy fast food rather than cook for your family.
$20 buys you 4 medium burger meals at the local McD's... It costs me about $28 to cook a leg of lamb and some veggies for my kids.