For the balance of your life you will encounter references to Greek mythology in all facets of life, it turns out to be very helpful to have an understanding of it, at least a grasp of the major gods. I can't tell you how many times I've felt the need to research various Greek Gods in order to understand some obscure reference. Also, some day you may go the Louvre, where there is an extensive collection of Ancient Greek statues, at which point you will appreciate having some knowledge of what you are looking at. Who knows, maybe you will visit Greece someday, be nice to have a basic clue. Studying and understanding history is one of the best things you can do for yourself, it makes you look wicked smart when you know history.
Like you, studied Greek Mythology - I think in 8th or 9th grade, in ~1970.