It's not an either/or choice for nearly anybody.

There are plenty of volunteers at community events in my area that have prestigious jobs, and the strivers working to maximize opportunities for themselves actually seek these out as another opportunity for accolades and networking.

You just need to find people who actually have an interest in their community. You know who those people often are? Parents. I suspect the decline in birth rates, especially in urban areas, amplifies this in both directions.