Aurora3500: Having played around with Journey Mode for awhile since the update came out. I can't recommend it enough.
I don't consider myself a builder, and I always have an obsession with conserving absolutely everything that isn't renewable. My builds usually end up not being a lot more complex than rectangles/boxes made of granite/mushrooms/other materials.
With Journey Mode, it is a whole new way of playing. I love being able to duplicate items. There are many powers for you the player to choose to utilize or not. You can play the whole game on godmode and choose not to have enemies at all. Or you can make the game even harder than the legitimate master mode by having Master difficulty and an increased enemy spawn rate.
It is going to be difficult to go back from Journey Mode at this point. I already feel better about the builds I'm making in my new journey playthrough thanks to being able to research and create infinite items from those research at will.
You could also use Journey mode to experiment with builds to see what you like, then use your favorite build on one of the other modes.
I wish more games would have modes like this, for when I just want to play aroud with things.