It’s totally relative. My husband and I together in Germany earn about half of what I used to earn alone in the US (we’re a student and an apprentice, so we earn especially little). I’m still significantly more prepared for emergency costs now than I used to be, because the total rent for my apartment is about half what I used to pay, and I no longer have significant health/health insurance or vehicle costs.

Not really. You probably have all your needs met (enough food, somewhere comfortable to sleep) with leftover resources. Many in the world do not have their basic needs met. You could give your extra resources (everything above necessary food and board) to the poor. You are hoarding wealth from their perspective. Just like you see the billionaires hoarding wealth.