I like the first two, and I might major in those fields (since I'd actually learn to program and compose/play music...as opposed to writing papers only a handful of people can actually understand or appreciate).
The whole point of writing is to clearly convey a message; is the verbosity above really necessary?
I was an English major and currently work in a library, and would argue that there is no one single reason for writing. Sometimes it is to clearly convey a message, but sometimes it's just to make you think about or feel something (see: novels and poetry). Philosophy is similar, I think, in that you will read things you disagree with, it will challenge your notions, and you'll question yourself and the writings, which will make you a better critical thinker. There are many other reasons to write, of course, which I won't even try to list out for you, but think about your notion that writing is only to convey a message clearly.
I would also argue that you need to get all the practice you can get at writing well and clearly, using a professional and well-developed vocabulary (tip: reading helps develop that vocabulary, and not just reading stuff on the internet, but reading Burke and other stuff from hundreds of years ago, and especially reading stuff you wouldn't pick up on your own). I had very good writing training during high school, and so when I got to college, writing papers was a breeze. Sure, there were a few literary analysis type papers where I didn't really care much for what I'd read, but I was able to find value in them and write the papers, anyway. It seems I had to write a paper for just about every single class from geology to women's studies to history to music appreciation. All that practice has come in handy my entire life. I only had one test in the whole of graduate school, the rest was projects and papers. And in your working career, regardless of what job you end up with, you'll likely have to write all kinds of things that only one or two people will read, but it will be critical that your message is clear and that you can convey yourself well. I can't tell you how many supposedly "professionals" I work with who have trouble writing clear e-mails/memos. Seriously, it's shocking to me and completely abhorrent, but there it is.
Pro tip: visit your school's library and get help on projects/papers from the librarians there. Seriously.