When I was in college I asked the same questions most of my students are asking: What does this have to do with me? Relevance is a tricky thing since it often doesn't become apparent until after the fact. You can't always know what's relevant until you've learned about it and used it.
I majored in telecommunications. This was before the internet, the cell phone, the laptop, the iPad. You get the idea. I was interested in doing audio and video production. On the side, I took irrelevant courses like everyone else: history, philosophy, science.
Now, I teach philosophy. Online. So, how irrelevant was my college experience? Not irrelevant at all. Very relevant now, if not quite as obvious then.
Virtually every course I took in college has been useful in some way for me.
Audio production: I record my music using computer recording software. But, the principles of editing and mixing were learned in that course.
Video production: I make videos and post them to YouTube. Different technology, same principles.
Philosophy courses: At the time, irrelevant electives taken because I enjoyed them. Today, it's what I do.
History courses: Philosophy is the history of ideas. Everything has a history and understanding that allows us to understand much of what will happen in the future. Took a while to learn that lesson but the foundation laid in college was important.
Science courses: Philosophy and science continue to converge, each informing the other. No understanding of how the world works and how to think about it is possible without an understanding of scientific principles.
So, what are you taking now that is irrelevant? Are you sure about that? Will it be irrelevant in 20 years? 40? 60? Are you still sure?