And second, total collapse isn't going to impact the developed world like it will the worst off parts of the world. Places like Africa or Asia would be hit far harder than places like North America or Europe.
Thats an odd thing to say, considering there are millions of people in Africa that still live as if the developed world doesn't exist - subsistence farming using manual labour, hoes and oxen (just like we did a few hundred years ago), little to no access to modern medical practices (just like us a few hundred years ago), little access to education (just like us a few hundred years ago), little access to electricity (just like us a few hundred years ago) etc etc.
These people go about their daily lives tending the fields, trading small amounts of produce with each other and the surrounding villages, living in mud huts, boiling water over wood burning fires and treating broken bones with wooden splints. If someone can afford a token amount of modern medical help, they walk (or get carried) for dozens of miles to attend a clinic, otherwise they make do without.
In the event of a global collapse, these people will simply carry on as before.