Bone Broth?

What exactly is it good for? Does it even make things taste good?

There aren't really miracle foods. We all need variety/balance. Broths are mostly water, have micro-nutrients, and some of the flavor of what went into it. If you need to jazz up some foods it is an easy goto without adding much in the way of calories.

For food you can cook with it, an example instead of grilling a chicken breast you can put some in a sauce pan with the chicken and then throw your veggies in at the same time or afterwards to get a little more/different flavor in your meal. Anything that calls for water you can substitute all or some of the water for broth to give a different flavor.