Hm, maybe I should give that a shot. Well, what I really want to do now is dance, combined with music. Or maybe just perform one day. But it seems a bit impractical, do focus hardcore on dance. And now that I am in college, I think I will do reasonably well. But there is the ever present issue of picking a degree...
College degrees don't matter. Unless you want to be a doctor or scientist and need the degree to get into a grad program. Even then you can still major in anything you want as long as you do that pre-professional chain of classes. Or you can do a post-bac after the fact. What will be more important is your job history which will depend on also on your internships and overall classes and GPA.
My advice to you as someone who wished they had done what they wanted (Theater/Film/ som obscure language I don't use anymore) instead of what was practical - take classes based on what inspires you during the first 2 years. If you see a pattern showing, go with it for a major. If you want to major in dance then major in dance. You can get a double major or a minor to 'beef' it up if you want.
I had a friend who double majored in Biochem and US History went straight for her PhD in Pharmacology was making bank as a science advisor then got her JD. While this was a very professional route the point here is that her US History degree didn't necessarily apply to anything. And she knew that. But, she just loved US History and wanted to study it so she double majored in it. I think she said she thought it also made her well-rounded compared to the eggheads she'd be competing against for grad school and fellowships. Also there was a musical theater kid who played 'Annie' as a child who double majored in theater (which she loved) and was pre-med (which she also liked but not as much as theater) and did make it into med school.
Also with dance and music, honestly speaking this may be the one and only time in your life that you have this opportunity to study these subjects in depth, with academic rigor, in a relatively safe and stable environment.
When I was your age I would have thought "wow, dance degree, impractical" but now I think "damn, what a great chance, do it!" Having a dance degree will not hurt you in "the real world" to land a job outside of that field unless your GPA sucked and you didn't take any other classes.
Of course, you don't need a dance degree to be a dancer or choreographer, but we're not really talking practicality here, more what is appropriate for a major.
I also like to study dance and music, but unless you are in a full time college there is no way to duplicate that 360 learning environment and rigor and accountability. I have taken music, dance, and language classes after undergrad but I sorely regret not taking more language classes. It is painful and expensive and often times kinda shoddy trying to learn these things outside that environment - unless you are really good at being self-taught. Again, that undergrad environment when you are a "traditional language age" is the best way to do it and build that foundation.
Soooo, yeah, just do it. You don't have to worry about what's practical and sacrifice your interests etc. just yet.
True, true. The problem is that I don't know when the problem started, I just noticed a subtle undertone that seemed like seething anger. I think you're right that it's difficult without details, but I think your general descriptions are helpful anyway. 
