Philosophy is just one of the liberal arts. This idea has declined in popularity in recent years but I still think there's a lot to be said for possessing a liberal arts education. If you have a good one your understanding of the world around you gets broader and deeper. You recognize why things are the way they are. In the long term you may spot opportunities you wouldn't have otherwise, or be able to solve problems that would have seemed intractable. Maybe most importantly you end up developing a sophisticated moral framework that's grounded in history and all the things that eventually led up to you existing and living the life you live.

You don't have to major in a liberal art or even go to college to get one, you can just read books. You also don't have to learn it all in your early 20s. You can just incorporate the great works into what you read throughout your adult life. It's very easy to find lists and recommendations online for what you should read if you want a broad-based liberal education. The general idea is simply to be informed about and understand the foundational concepts in philosophy, economics, political science, psychology, history, sociology, law, and so on. There is no need to go deep in any one them, unless you find it interesting and wish to do so. Someone who reads one or two foundational works in each of these subjects will have a wildly better understanding of the world than someone who doesn't. To me this is what living an intellectually rich life is and it's very rewarding. If nothing else, due to my liberal arts education I will never be bored in retirement, there are thousands of books that I would find it interesting to read.