Earth is our home and I like to use that as an analogy. You don't need to know everything about how your home is built to live in it. You can reside in a house without knowing its full history, how it's built and all of the intricacies of its plumbing, electrical and heating systems. It can be really interesting to learn about those things, but you don't really need to know them to go about your daily life. It can be valuable to know about these when something goes wrong, but then you don't really need to be an expert yourself- a few basics are important, but you just need to make sure that there are experts out there who understand those things and who can help when needed.