Let's not let biology count though.
If a trans male had to go through life as a true woman must, there would be none.
Transgenders are 6 times more likely to attempt suicide and for transgender youths whose parents reject their gender identity, the rate jumps to 13 times. School dropout, depression, drugs, and crime rates for transsexuals youths are all above the national averages. If you're saying they would prefer their current life in lieu of a "normal" female, I think you're wrong. Most of these people are miserable although with profession help they can adjust.