The EU is a big place, and geographic Europe is even bigger. Try spending a couple years living outside the affluent areas popular with American tourists: rural Romania for example. Life isn't that great, nor is life expectancy particularly long.
Worst of Europe isn't better than the best of USA. I'm talking about averages here.
Oh and I'm born and raised in Bulgaria, poorest of EU and one of the poor ones in Europe and even the worst places of Bulgaria are quite safe and have good food available. Can you say the same for the worst places of the USA?
Life expectancy is worse though, according to the WHO that's because of prevalent smoking, frequent alcohol consumption and unhealthy diet and low physical activity. Completely avoidable, no one has to live off on cereal even in Bulgaria.