fertility treatment

Why is fertility so expensive O hate the fact that we as females have to suffer so much that we are already having problems getting pre gant and some of us can't even get pregnant, I feel like I have been trying to much and to long I just gave up trying and all the crying the pain of wanting to be a mother so bad it is killing me so bad. My hubby tells me it's ok we can adopt but that is not what I want to do because I know that I won't have that connection with that child I cry because I want it so bad I want to feel my child move I want to hear that heart beat I question GOD I sometimes feels that God does not like me like I am just here for no reason