For my own blogs, I use a homegrown system, a hybrid static and dynamic site generator. I started writing it because I realized that nothing suited my needs:

highly accessible and compatible with ANY browser and configuration for the client,

portable and stable on the server side,

and convenient for me to use from a multitude of devices.

Starting a blog today, I would use this same platform, because I haven't seen anything better come about since I started writing it.