You really don't need a degree in literature to become a published author. That's like getting a degree in media studies so you can become a youtuber. Yeah, you could do it, and it may give you some advantages, but like... You're already literate, right? Besides that, taking a class or two on literature or creative writing would give you a lot of the skills you need to get you on your way, which you can easily do while pursuing another degree that ensures greater monetary security or (less easily) at a community college while also working.
I'm not saying that the system that begets this thinking is good, but it is the one we live under.