Needing to vent..

I don't mean to be ungrateful but I have 4 girls that I graduated with they either had there baby or have one on the way.. And they don't have the dads for there baby either he doesn't want them or the baby. They don't have help they need nor the maturity to be a parent.. They wanted to make a pack at 16 to get pregnant.. None of them have a stable life.. How come it was so easy for them to get pregnant but for my fiance and I have been trying for a while now. We have the back up, the stable life, the money, and he is very excited to be a dad, he's been planning things and coming up with names for our child.... But for some reason it's hard for us.. I feel like we're being punished or something and I'm not doubting the big man up stairs but how can he bless them but keep making it harder for us..?