Well at death if I am wrong about what I believe, I lose nothing. I just die. I cant imagine the guilt that others will go through if I am right. But for you I cant imagine how horrible it will be for you if I am right. When you have to face up to the fact that your the reason your daughter is going to hell.
Actually Bro, you are losing quite a bit. You are losing the ability to enjoy this present life to its fullest. When you worry about the next life you sacrifice things in this life. In this way you are giving up relationships, and experiences and joys that we know are real in this life for a possible afterlife that even you admit might not be true.
My daughter already understands this. She absolutely loves Halloween. She starts planning her costume in April or May. We buy cloth. We use dye when we can't find the right color. We sew, We use hot glue. She really likes Japanese Anime which takes quite heavily from mythological creatures including demons.. but they are cute demons who often learn to do nice things.
But the point is, that my daughter is creative and imaginative and playful and fun. Halloween expresses all of these parts of her personality. She love everything about it.
Her cousins are very devout Christians, and they started taking my daughter to a church group to learn about the Bible and how to follow God. My daughter was pulled into this group for all of the reasons that people are attracted to religion (the people were close and cool and it is nice to believe in goodness and heaven).
But then this Christian group told her that to follow Jesus she had to give up Halloween, and especially to give up stories (however good, or imaginative or cute) about demons.
My daughter thought about it, and made her choice. She likes the creative, fun person she is. God would ask her to change the very things she loves to do.
I would have supported my daughter had she wanted to stick with religion. But I also respect the choice she made. When she was asked to choose between God and the life she wanted to live, she stayed true to the person she is.
Jesus himself says that anyone who wants to follow Him must "count the cost". He was honest and upfront with the fact that to be a Christian means giving up who you are in the world.
For me, and for my daughter, this is a clear choice. We choose to live the life we have now, in this world, that we know is real to its fullest. If there is a god who wants to torture us for this in a possible afterlife, that's on Him.