I've photographed using medium and large format film cameras then when the digital age started I pretty much concentrated on Nikon. My last DSLR was a Nikon D850, its a great camera, but in certain situations I felt it not good enough.
I was always sceptical about mirrorless cameras, i did not like the electronic viewfinder, to me it was just weird. But a camera is just a tool we use to capture a moment, that candid photograph or that first look of the father of the bride. Did it matter if the camera had a mirror or not.
I decided to buy a Sony A7iii mirrorless full frame camera and just one lens to use as a backup, but really to see if i could fall in love with not only a mirrorless camera but a camera that has turned the world of photography brands on its head!
High ISO and low light performance
Autofocus and Eye AF
5 axis stabilisation
Size is not everything ;-)