Nobody asked you to write a blog post.
There isn't a deadline. Nobody is waiting for the next instalment. Nobody needs you to explain your thoughts on the latest thing.
You can write it anyway.
There's something quite freeing about making something without needing to justify why it exists. Write because you noticed something. Write because you thought it was funny. Write because you wanted to remember it.
It doesn't need to be useful.
It just needs to be yours.