Anyhow, I've long since grown tired of playing this stupid and pointless game of engagement with people who either refuse to understand or who are incapable of understanding.
Some people might have seen a pre-editing version of this post which, in its own way, was a more concise summary of my feelings on the matter. However, I decided to elaborate.
I think your description is simply wrong. I am extremely confident that I am included in the group of people you describe as people who "either refuse to understand or who are incapable of understanding." And yet I think that neither I nor the others who I'm sure are included in that group can be described accurately in that way. I think many of the people who have engaged in this thread have shown a great deal of comprehension about the medical and social issues associated with transgender people, but have reached a different conclusion about how that ought to affect law and policy. It isn't a question of understanding. It's a question of priorities. Simply put, I decided some years back, after studying the issues and discussing them, mostly in this forum, that modesty was a valid lived condition and I would support women, especially teenage girls, in their desire not to share a locker room with male students. That's it. It's not a case of not understanding anything. It's a case of saying that not everyone can get what they want, and saying that the feelings of the girls are valid, and should be respected. It's a pity that not everyone can be accommodated, but that's life, and I choose to respect the wishes of those who feel their privacy is being invaded.
And with sports, the questions are even easier. The whole reason for existence of the binary division is completely undermined if untransitioned males are allowed to compete as girls. There are some issues related to intersex people and to people who have taken hormone treatment. There is room for discussion in those cases, but when it comes to intact males competing as females, the answer is so obvious that it isn't even worth discussing.
And if LondonJohn feels that discussing the above is "stupid and pointless", then I welcome his decision to cease engaging in the topic. I'm not sure "engaging" is really a good word to describe the situation anyway.