This has been brought up in other threads, the whole IVF situation contributes to the homosexual Steven theory. His wife carried twins to term without much issue, so it seems to me the eggs and uterus are good, the issue is more likely with the sperm. Low sperm count or do you think Steven made excuses during ovulation cycles?
I also theorize that many repressed homosexuals lash out when their wives are pregnant. For a normal, traditional, heterosexual man, his wife's pregnancy, especially a first pregnancy, should be a time where his protective instincts kick in. It's the only time in your life, where by caring for your partner, you can care for your entire family at once. Often, men find themselves loving their partner on a higher plane, not in a fetishistic way, but in a "this is the mother of my children" way. A wealthy man like Steven could make it so that his full term wife and his two children inside of her could be in total comfort, his wife not having to lift a finger, but he chooses not to. Why?
A repressed homosexual would be disgusted at the essential womanhood of pregnancy, and would be more likely to take it out on his wife. Just my humble opinion.