Assume you have all the luxuries of a modern life in your Tardis (toilet, hot showers, TV, books, game console, ...) which doubles as a mini self-sufficient apartment with it's own energy stores and generation.
Where in history would you go if comfort wasn't an issue?
Thanks for the in-depth explanation.
The way I see it, MWI is more of a philosophical idea. As far as I know, it’s impossible to test it, so currently it’s still firmly outside the sphere of science.
You pointed out some valid reasons why the future of MWI looks shaky, and I’m fine with that. If MWI falls apart, I’ll just move on to the next best thing. I just find MWI intuitively appealing, but I don’t have any strong reasons to believe it or reject it. As you mentioned, MWI doesn’t change the way you would carry out quantum mechanics, so currently it has no practical impact.