I love them! Generally find that once you get one it’s a lot easier. I find that if I’ve not looked at one for a while, and 8k kit getting it, and I go back to the first one I got (some boxing kangaroos) and normally it just clicks again.
My partner can’t see them, and is convinced it’s just a dumb hoax that people on the Internet play pretending they can see them.
I believe that the the claim that medieval people needed to drink beer because water wasn’t safe to drink is a bit of a myth. They built aquaducts, dug wells, etc.
As far as I understand it, it was more to do with preference (beer is great!) and calories. Beer was a good way to turn grains into easily quaffed liquid meals.