Not getting a college degree isn't as big of a problem as some sources want you to think, and there's plenty of reason to believe now that you end up with a net lose in earned funds over your life from most college degrees. That said, you're already 4 years in so... you kind of might as well finish. The calculation for making more money with a high school or partial college degree is based partially on getting into the workforce earlier while not spending the huge amounts on tuition, along with the fact that skilled/trade jobs can pay pretty well (plumbing, mechanics, etc) if you do things right.
But onto the problem at hand I guess. First, while it's nice to remember the stuff you learn (I enjoy it, but I'm pretty academically inclined) the degree process is only minorly about gaining information. Instead it's about learning how to think and learn (if you go to a good school that still teaches properly), flexing the brain muscles to push them a bit further in multiple directions, and providing proof that you can get the kind of workload they give you done (valuable so an employer knows you can get whatever workload they give you done). This is why for many jobs what you majored in isn't as important as simply having a degree in anything. Even if you want to work in tech, where they often do prefer a CS or related background on job descriptions, there are a lot of ways in and up without that (case in point, myself, and a large number of people I know in tech, but also the former Senior Developer and then VP of Engineering at my company had his degree in International Affairs). So, if you are feeling burnt out and don't know where you are going with things, don't worry so much about it. Pick a subject, ANY subject, that you enjoy at all now, and finish your degree with that. Your options may end up being more limited and harder to get into certain fields in the future, but you'll still have opened the door for a lot, and if you were otherwise not going to get the degree at all, you aren't worse off by getting a degree in a field you like. Seriously, if you like to read fantasy and poetry, get that English Lit degree. Like the ancient china, get that history degree focused in ancient far east. Go for a fine arts degree if you are so inclined (though, be warned on that one, those are typically the hardest workloads and hardest courses, though depends on the school).
But, if we get even further down into this, your problem probably isn't entirely related to your job perspectives, school or not knowing a field to go for and whatever. Likely, there's some other dimension of your life that is missing, and maybe you're looking in the wrong place to fill a gap. More likely, if you do the tough work of reflection and searching elsewhere, you may find once other, more important parts of your life are in place, like once you figure out what your life is really about, not just what you want to do for work for your life, then the other pieces will fall in place or at least become clearer.
Remember, even if you pick a field you are good at and end up making billions, if you hate every second of it and the rest of your life feels meaningless, it's all for nothing.
