People had been getting married years before the churches brought the idea of religion into it.

1. The food industry's first priority is not our health, it's their bottom line. Most of us are also suckers for this, often measuring the value of food solely by price. It would be expecting too much to hope that the cheapest food is reasonably healthy, and of course it isn't. Breakthroughs that extend the shelf life of fresh food cheaply would be huge.

I am not sure if the US/Russia difference you mentions matters more than the house/apartment difference. The vast majority of apartment buildings I've visited or lived in the US, with more than half a dozen units, had large cold and hot supplies, so no single individual could exhaust the supply. Some of them would run short of hot water a little at rush times in the morning before typical work hours, but that seems to be less and less common as larger buildings switch over to on demand heating, instead of tank based heating.

Shooting once or twice is still enough to make being a burglar or robber a quite unhealthy business in average (if you believe in the self-defense shit).