Hypothetical question of course, but would you bf even if there was no proven health benefits.
I've been feeding on demand for 19 months and it's not all been plain sailing (by any means) but I think I would. It's shaped how I've parented my daughter in her early months, to an extent.
Sorry, I don't mean this as an insensitive question and I don't intend this to turn into a mega ff vs bf thread. I'm genuinely interested. Do we just put ourselves through this (it was mentally quite exhausting and worrying as she was prem and made me obsessional...)