sadzzz, "people"..are stealth. Thats basically it.
anyways, I can speak to the topic from personal experience. my wife can not have kids anymore, so we brought two kids in our home and our life.
I do understand that I have the ability to remarry to have kids but if the shoe was on the other foot and my wife wanted to leave me if I could not have kids, how would I feel?
she gave me 2 beautiful babies, sadly their lives were very short in this world. She almost died in the process. I could not go for someone else because she can not have children now. To me she is the love of my life and the mother of my children, whether they are with us or not. She is also a wonderful mother to 2 pidoos we brought into our lives and who have enriched our lives so much.
May Allah bless you and your family. I hope Allah gives many people the strength to learn from your example.