It sounds like climate change might be your passion. If you care that deeply about a cause, it’s very much worth your time (and everyone else’s) to do some work for the cause. Remember, you can have multiple things that you care about. Having varied interests is not only OK, it’s preferable. Diversity in your focus is what keeps you from burning out.
Have you found your passion? How?
Walls have many choices when it comes to careers. We can separate areas; protect people and things from the elements (in a team with roofs and floors); we can go into marketing and provide space for posters and fliers to promote events; and some walls have a sacred duty to stand as memorials. When I started answering questions here, I could tell I had found my passion; it just felt right.