The difficult thing is that we've gone a long way towards eliminating the tight-knit communities from our society. It's a lot easier to coordinate resource and effort sharing with people you've known your entire life (family, family-ish, and church cohorts).

Even just the church tradition of organizing bringing food to somebody in the community who is sick, indisposed or undergoing a stressful time in their lives (think: just had a kid) is falling by the wayside.