This is a #vaguequestionsbypablo kind of post. I wanted to keep it broad. ;) I think one of the nice things about people who want to do good in the world is that actively attempting to do so makes them literally feel good. It's a feeling that really reinforces the behavior. Whether particular individuals are faith driven or not in their desire to help, people with that kind of drive are probably a good resource for well informed, well equipped, well organized organizations that have the experience to really do a lot of good. Do you have any experiences that really stand out to you? Something super positive and encouraging or something that you walked away from feeling like you've really gained something as an individual?"Charities" is a really broad term that encompasses a lot.
Working with people with good energy and drive, but spending their time in ways that largely makes them feel good, but has little effect on the issue they are addressing.
Since ya asked.