Sometimes you just need to say a lot. When you have a large block of content to add layouts like this are helpful. The copy doesn't feel cramped when you lay out a page with proper padding and spacing. It helps readers scan copy if they'd like, or just cut through the crap and convert.
If you're really feeling long-winded you can load even more copy. Be sure to break it up a bit. No one wants to read 3,000 words of block content. You'd be better served to layer in some bullet points or even a video if you're feeling frisky.
Blog articles are a fantastic way to educate readers and build new indexed pages for your website. Make them robust and full of value