There’s no better way to start a blog by making George Orwell’s words mine:
I think there are four great motives for writing, at any rate for writing prose. They exist in different degrees in every writer, and in any one writer the proportions will vary from time to time, according to the atmosphere in which he is living. They are:
(i) Sheer egoism
(ii) Aesthetic enthusiasm
(iii) Historical impulse
(iv) Political purpose
I cannot say with certainty which of my motives are the strongest, but I know which of them deserve to be followed. And looking back through my work, I see that it is invariably where I lacked a political purpose that I wrote lifeless books and was betrayed into purple passages, sentences without meaning, decorative adjectives and humbug generally.
George Orwell, Why I write, 1946