Dear Jeff,
No, you're not coming across as callous at all. All I hear is a very concerned and worried father trying to do his loving best for his child. I have several thoughts I'd like to share:
1. Helping your daughter bind her breasts. On the one hand that's so kind and thoughtful of you. On the other it reminds me of the boy sticking his finger in the dyke. The waters are going to rise, her puberty is going to continue. I dearly hope that in parallel with this you are working with a qualified gender therapist and considering puberty blocker.
2. "I do not want her to be in this world." Are you more worried about her not becoming and rejoicing in being a young woman? Or, are you worried about how society may treat her?
3. Suicide: yes, 41% of trans adults in the US have attempted it at least once. I have, 2-3 times. The last one (about 3 years ago as I recall) was very close. Why do we do this? Because we are so torn up inside, losing the fight against our gender dysphoria and feeling helpless in the battle to become our authentic selves. For teens it's even harder because they have no resources and are so desperate for their parents' love and support. Without that they are stuck, not knowing what to do. They also know lots about how teens are committing suicide.
4. "While I understand that you believe you are transgender, has this decision to live this way really made your lives better?" Yes, I am 100% better off than before. I have no doubt in my mind that I am living authentically as the real me. Do I wish I was born female? Of course, and it saddens me that I wasn't. But there's nothing I can do about that and my life is so much richer and happy than I've ever been before.
I believe your question comes from an understandable lack of understanding. I'm sure you've heard that people whose internal sense of gender matches their birth sex are called cisgender or "cis," and those whose gender doesn't match are transgender or "trans." Clearly, you are a cis male: great! I'm happy for you, I really am. But because of that it's so hard to wrap your mind around what it is to be trans. It just seems odd, foreign, unreal. But real it is.
I'll share a story about me. I am very binary in that I have no doubt that my gender is female. But the label "transgender" is an umbrella term that includes many other gender feelings including "non-binary." My therapist is non-binary and I have a couple of friends who are also. Now that is something I can't wrap my brain around! I don't get it. I believe that they experience it but no matter how hard I try I just don't understand what it feels like to be them. But I accept their reality to be as real and valid as mine.
Perhaps these videos will help you, I hope. They are quite recent and show Megyn Kelly with parents and teens of the GenderCool Project:
Five Transgender Teens On The GenderCool Project And How Important Support Is | Megyn Kelly TODAY
Siblings Of Transgender Girl: It Profoundly Affected Me In Such A Positive Way | Megyn Kelly TODAY
Hear The Inspiring Message One Transgender Girl And Her Parents Want To Share | Megyn Kelly TODAY
GenderCool Project Founders On Myths Of Transgender Kids & Rollback Of Rights | Megyn Kelly TODAY
Be well, and please, stay in touch. We only wish to help you and your child.