I prefer to only blog about what I know.
That's fairly easy because that's what I find myself being passionate about; what I want to write about.
Of course, there's always a chance that in my passion I am wrong- and if I am I hope you'll straighten me out (but you have to convince me with reason rather than with emotions or superstitions).
But, really, what chance is there that theft and aggression are better things to incorporate into your life than mutually consensual, voluntary interactions- and self defense against those who refuse to reject theft and aggression?
The rest of the stuff I'll either not talk about, or I'll tell you what I think, while letting you know I am not sure about it. That's why you don't see some subjects that other blogs dwell on here.
I hope that works for you.