Confused! Lost!

There are occassion quarrels with hubby and there are few moment he said he cant stand my unreasonable and indicated that after 5 years (sell the flat) we can go separate ways. I once asked if 1 day we go separate way, who will take care of the child. He replied, me. Now, I am thinking if i can scrap the idea of having babies as they are the most innocent part. I dont want them to have a broken family. Any kind advice for me.