It is hard to know how many L (lesbian) G (gay) B (Bi-sexual) T (transgender) people there really are out there -- percent-wise. Supposed statistics range from 4 to 23%.
It is my observation that the younger generation -- particularly kids now in Jr. or St. high -- are much more open toward considering whether they are really Trans-gender.
Like you, the confusion breaks my heart. Many of us would attribute the rise in this to God's judgment upon the West -- in Romans 1 fashion. We are being "turned over."
But let's get closer to home. Considering your immediate family, children, grandchildren, siblings, uncles, aunts, cousins, nieces, nephews and their spouses -- how many LGBT people do you have in your extended family? We don't want to go further down (to second cousins, cousins once removed, great-niece, etc).
You are welcome to comment, but you might want to be careful so you don't create conflict with family members.