[viraptor]

azernik already answered regarding the drive. Just wanted to comment regarding:

> At least, when you eat too much, you're only harming yourself.

That's not true, just as "if you smoke / drink you're only harming yourself". Provided you have a family you're putting them at risk of your early death. You're both passing down more likely obesity when pregnant (2015 study, but don't have time to google it now) and teaching kids the behaviour that likely leads to obesity for them too.

So yeah, you're actually harming your family not just yourself.