[middus]

I'd love to write. Which pen should I use?

Short answer: it does not matter. Writing matters.

[unethical_ban]

If some of the pens didn't let me keep possession of the words I wrote, or limited the number of people that could read my manuscripts, I'd choose a different pen.

Perhaps it's not terribly important, and I'm to the point where I'll capitulate, but I want something I can self-host, and I want something easy to run. You don't own what you don't host.