How to start a successful blog and why blogging is important for professionals

From my personal experience, it's much easier to make a successful blog than to make a successful project website of other kinds and it takes a lot less effort.

I started writing a software development blog about 1 year ago, really casually writing 1 article per month. Now my blog gets about 600 views per day.

My open source project website gets about the same number of daily views but I spent 4 years working on it. The ROI of the blog in terms of my time is probably around 100x which is pretty ridiculous because it's comparatively useless and I don't even care about it.

Why exactly was this upvoted? Content seems a bit...lackluster.