A Bronicaaa! :D
I use a Yashica Mat, and I basically only shoot medium format. It's so much fun ! I love the slightly lower perspective it forces you to adopt: because you have to look from above it's like you're viewing the world through a child's eye again :)
Yes! The waist level finder is a blast. I have the eye finder for this Bronica, which supposedly has a light meter in it, but I prefer challenging myself with this set up. I never thought about it being a child’s view of the world but you’re absolutely right.