The bits of facial hair that are popping up have probably been, hands down, the most exciting change of T. I am really happy with my voice drops and fat changes too, but you can always doubt those, you know? You can think 'oh, it's only a bit deeper, the rest is in my head.' Or 'the fat hasn't changed, I just lost/gained weight and I am fooling myself.'
But when dark brown hairs begin appearing on your chin...you can't feel insecure or uncertain about that. They're there right in front of me.