Very good points. Life experiences are easy to target topics and should come easily to anyone.
I think some people think that this is where you find a niche and only focus on that. But for me, staying to a niche didn't work well. I found it easier to post about a diverse range of topics, basically anything that came to mind.
This post is actually another example of a thought that stuck in my mind that I couldn't shift. And it originated from a couple of conversations that I'd had. So it had to be put down on pixels.