OP, Im coming at this from the point of view of a mother of one, I have a daughter, she is married with a son (the light of our lives). I care very much for my son in law, he is a good, kind, hardworking decent man, he takes care of our daughter and grandson wonderfully.
We live close by, my daughter and I speak everyday, we spend time as a wider family quite often HOWEVER, we, (dh and I) are totally happy that the 3 of them build a strong, happy family unit, if life goes the way it should, one day our daughter will not have us, we will be dead. I hope to God that when we die she will have HER family, HER Husband, maybe a daughter in law and grandchildren of her own, I hope her family will only get larger. I believe we are totally normal in feeling like this, her on going happiness is our largest concern and priority.
Your parents are cruel, what they are doing is not for love of you, its for control of you. Please please stand up for yourself, you Husband and your child. They should be your priority now, put them first!