> I think it is ok to not engage.

I understand what you're saying. I appreciate the thought behind it. But in the end, I do not agree. I cannot be certain where my actions will and won't ultimately help accrue to impact; the pebble knows not the impact that its ripples will have. If you care about something, I think you should be involved.

> If you care about something, I think you should be involved.

You're free to overthrow your government and instate humanitarian policies, but a pebble is not inclined to roll uphill.