The vast majority of people I know (Texas) couldn't live a productive life without a car. Some people certainly could but not most. Meat, though, they could definitely do without—and for most of them it'd be healthier.
This always sounds phoney to my ears. Move to a suburb to have a large house (3 bedrooms!), vote for parties that build roads instead of public transport, despise public transport, don't walk 100m but go by car, don't own a bicycle and then "I couldn't live without a car".
Yes they can't live without a car, agreed. But this is by their own choosing.
I believe the topic is "Climate Change" so I don't know why you're talking about diabetes and heart disease.
The argument is probably that meat production emits higher levels of carbon than other types of food production.
Unrelated, meat does have an impact on diabetes and heart disease, so if you're concerned about those things, then you should definitely learn more about it.
Yes they can't live without a car, agreed. But this is by their own choosing.