What another kid

Ok so my man has 3 other kids for another relationship and we have 1 will i want another one and her don't he said we have a good number 2 boys and 2 girls she said that should be good. But for me i want 1 more and he don't. He keeps tellin me the reson he don't want another one is bc he never had a life he went from takein care of his brothers at a young age and then he had a kid of his own young and he wants out of the dippier stage but none of that is my fault y should i have to suffer just because he never had his younger years.