My question is primarily: If I'm going to call myself an Epicurean, do I have to "pick an explanation" for these phenomena and move on? Is curiosity an Epicurean trait? Or do I need to choose and declare (dogmatize)?
Help.
Oh No no no! Absolutely I would argue curiousity is an Epicurean trait. But the big enemy of peace of mind is doubt and gnawing anxiety that some people have about gods or life after death, and the Epicurean theories give good reason to rest from constantly worrying that those are going to zap you. To me, what you're talking about is the kind of thing that i love to do, which is to explore the implications of the issues like infinity, life on other planets, etc. But it seems that not everyone thinks that way, and maybe as people get older or sick or just tired of the search some people seem to just want to "rest" and not to think that they have to constantly reexamine whether the gods love or hate them or whether they are going to hell.
I think THAT is the ultimate point that epicurus was making, not that scientific inquiry should ever stop or be limited -- so long as you personally see benefit or pleasure in it!
When you get a chance to listen to the podcast released today you are going to see how directly related this post is to what was discussed. I don't think I did as good as job with the conversation as I should have in keeping it tied to the high-level conclusions, but I am sure you will have a lot to think about from listening particularly to Elayne on this.