Today I came out to my 84 year old father.  I had been hedging and finding it difficult to get to the point and he was getting quite agitated.  When I finally told him that I was trans, he said 'thank goodness, that you only need to take hrt to be ok, I thought that you were going to say that you had cancer!"  While I probably gave him too much detail, dad seemed good.  He called me a few minutes ago and thanked me for sharing this with him.  He said that he felt honoured.  I feel likewise.
Aisla