As the sole STEM person in a family of humanities majors (phys ed/history, political science, and comparative religions), I’ve always believed that the humanities have a lot to offer. If nothing else, every scientist and engineer will, at some point, need to write something. Knowing grammar is a generally a prerequisite for that (I hope). As a whole, though, engineers tend to be pretty focused on functionality, and that does lead to a very narrow view of what’s “useful.”
Sorry your family gives you grief! You can always come talk to my family. I think they’d probably understand you better than they understand me, anyway! I’m the weirdo in that bunch.