I think that it's great we now have the technology and skills to be able to provide such surgical and psychological services to people who in previous decades had to suffer because they were not understood, nor could they be helped to change.
It doesn't bother me in the slightest - everyone should be entitled to be their authentic self - whether that matches their assigned gender, or their felt gender.
Spouses? If you didn't know until late into the relationship - it could be a shock, but the person is still the same person you married etc - they just happen to be the opposite gender to the one that they display outwardly initially. Some older trans people - like Bruce (I do not know her chosen name, or I would use that) may have had to marry and hide it because society changes slowly. Now, it's ok to be trans.
Children - how is teaching your children to be their authentic self a bad thing? I can see it may be confusing to them, but...life is confusing.
I am not trans, however, so I do not proclaim to understand entirely (if at all) the road which trans people have to travel. I'd like to let them know I will walk that road beside them if they need me, tho.