I love my parents, despite their faults.
I'm slowly beginning to hate my in-laws though. I used to like them, then I realized what a miserable, manipulative, self-obsessed woman my mother-in-law is (and her husband enables her). I became cautious of her but remained cordial. Now we've realized that us being cordial and holding our tongues for sake of not being rude has completely backfired. She does and says shit to be hurtful in order to make herself feel good since she knows we won't say much about it. She knows everything and is always right, she makes shit up to give my husband guilt trips, and the world revolves around her.
I thought us having a baby would change things (since she hasn't stopped pestering us about it since she met me), but she's actually gotten much worse and completely unbearable. She nearly ruined my baby shower (similar to my wedding rehearsal, bridal shower and wedding), and she is constantly putting me down about the pregnancy. I'm not the type of person who likes being the center of attention, but she is, to the point where she gets very upset and acts out (like a child) to remind everyone of her existence. Instead of focusing on the baby, she just keeps talking about how this will or should change things for her. She really has no questions about anything and is generally disinterested in the whole process (my mom and pretty much every other woman in my life wants to know everything the doctors say, our plans for the big day, how we want to care for and raise the baby, etc). Instead, she gives me really bad and unsolicited advice or "facts" that dumb people from her work have told her - the hospital automatically allows grandparents in the room during labor and delivery, she's allowed to come to all the ultrasounds (internal/vaginal included), that I must drink beer during every breastfeeding session or I won't be able to nurse (so 8-12 beers per 24 hours that is directly going into my infant's body), etc. When my husband or I tell her that the "facts" aren't exactly accurate, then she resorts to telling me how wide my ass/hips have become (I've only gained 20lbs and have actually slimmed down to a very healthy size), or insisting that I must be having twins because I'm so huge. She refuses to apologize for any of this and has even denied the events of my baby shower, despite all the other guests witnessing the whole thing. She's actually turned it around on my husband, saying he never defended her, even though she hurt my feelings repeatedly and offended pretty much everyone in my family. I've actually had to go to the ER for pregnancy complications over the stress, and she knows that but still won't apologize or acknowledge she did anything wrong. She couldn't have kids, so I'm not sure if this stems from resentment, or if it's just because she can't be the center of attention, or both.
I'm not all that concerned about myself, but she's been hurtful to my husband his entire life, and she's been a total bitch to me during the entire pregnancy knowing any stress directly affects the baby. So I know she would treat our daughter the same if we let this behavior go on.
Edit: good lord that was long, and only scratched the surface.