I agree that debates about religion and atheism seldom change anyone's mind. I write mainly to clarify and to express my thoughts, and for the pleasure of perfecting my craft, not because I aim to convert the internet to my views.
Indeed, my articles aren't as personal as others. I focus on the ideas, arguments, and explanations. But see below for a more personal one about the roots of my worldview. I might one day write some more autobiographical articles, but it's not really my style.
Do you really think it obfuscates to focus on ideas and arguments rather than on personal details? That's a matter of style and logic (the genetic fallacy).