booboostwo thank you that means a lot. It has been one of the hardest things I've ever had to do- & feel free to butt in, you have saved me saying the same but put far more eloquently!
Wildboar not offended in the slightest, I have developed a thick skin! But actually honest curiosity like this I really don't mind, that's why I did this to answer those sort of questions, these threads usually get shot down by other arguments /discussions so its nice to have a simple discussion on my level. I get tied in knots on some of the feminist threads ! 
To answer your next question, puberty was when the dysphoria really kicked in as the physical signs of the dreaded sex became more obvious and the self hatred all consuming. After stumbling on you-tube clips of young trans men & women talking about how they felt he had a lightbulb moment and then came out, first to his sister (who has been an incredible support to us both) then me.
Snuggybuggy yes some physical characteristics are always there, but the hormone treatments do change the body shape quite a bit & for trans men working out once on testosterone can really help. Transwomen can do a lot to change their shape too although they can't hide the height or adams apple so easily. Not such a disadvantage these days with girls naturally being taller anyway. There are loads of different plastic surgical techniques now too that help feminise a face, or make up lessons that can give confidence.
You are right it can be difficult to cope wth for some.
Nutkins24 I have an older daughter,who has been a rock- but yes one of the hardest things was adjusting to the crippling sense of loss. I gave birth to a daughter but now I have a son. I always thought that trans folks were brave & admired them for making such huge steps to be happy and their true selves. (still do obv)
When faced with my child maybe gay, making that choice I went into a complete denial, it was only a phase, I was so confused at the conflict of my head and my emotions, I was on autopilot fo months.
Trans families can go through all the stages of bereavement really, but then have guilt on top as they still have their child, just not in the form you had first envisaged. I found it was easiest just to take each day at a time, then each week, then a month would go past without tears. I still have my funny, cheeky clever child, that I adore but now he is 6ft tall & I fit under HIS chin!
( His sister says he's just the same PITA as ever just hairier
)