If you feel your blog would amount to just another piece of clutter in an already massively cluttered space, then it will. Your expectations of how it will end up seem to contradict your interest in starting one, and the fact that you’ve already chosen a topic.
Perhaps it’ll help you to see the ‘blogosphere’ from a high level view, so to speak and really understand the web, the blogs, the engagement, content and just the nature of things out there.
You’re right that the majority of blogs (there are indeed a great many) are just white noise or ‘clutter’. The honest blogs that simply aren’t up to par, or naive folks who write one post a month on their own slice of cyberspace yet draw no visitors, those types of blogs make up a good chunk of ‘em, and they really aren’t anything groundbreaking.
Apart from those, you have an even worse category of cluttery blogs, including webspam blogs. TONS and TONS of the blogs out there are online for the sole purpose of SEO (Search Engine Optimization), and nothing else. They contribute no value, no good quality content and there’s millions of them. Complete trash, posting copied articles, poorly written or “spun” content, old news, tons of spam ads, hundreds of links to other spammy sites, and they soak up all this room on Google’s index and many other places.
Then you have lots of good, high quality blogs. Granted these are the minority… but that’s to be expected, as it takes thought, passion and effort to create a blog with a following and a site that engages your readership.
You really have to ask yourself what your goal is. Why do you really want to write a blog? If it’s successful, sure you can absolutely monetize it very easily later on. But you weren’t thinking about money when you spawned the blog idea. More likely, you were thinking of how you can effectively share your views and wisdom on the subjects of art and science.
Two questions to ask of yourself will really indicate your motives: (1) Do I want to attract attention and bring in new visitors? (2) Am I blogging to produce quality content upon a topic I’m passionate about?
If you’ve said yes to those two, please don’t abandon your ambition to start a blog. The web needs good blogs. You’re right that there’s tons of clutter. But that should not be a discouragement. That should be an uplifting fact for you, because you know how easy it will be to rise above the 80% of crap out there because you’re actually doing it for the right reasons and you’re committed to good content. LMK if you need any help along the way.