That's true as well, though pretty much everything in life tends to be some sort of a crap-shoot. I actually consider each post to be like a stock option, or "lottery ticket". You just never know which one may "hit it big". So many factors apply, such as time of posting, who's watching, what people are searching for, etc.

And I can't tell you how often I've authored posts that took days to assemble, with what I considered invaluable information for those who took the time to read it, and it gained almost no traction. However, others posts that I literally threw together in 20 minutes, sometimes unsure if I should even post it, takes off like a rocket and earns more than my last 10 posts combined!

Moral: Yeah, it is all a crap-shoot, you just never know, so write about what you know, what inspires you, what you enjoy, and hope for the best... And over time, you might start getting more and more "pleasant surprises" come along your way! :)