MIL Dynamic

This is for people who don't really enjoy their in-laws so please refrain from the "I love my MIL/FIL" posts because it's just not productive lol
Anyways, I used to love my in-laws but after having my baby I don't want anything to do with them and I have no idea why. I don't want to feel this way so I'm genuinely curious if anyone has any insight into the whole MIL/FIL/DIL tense relationship and why some women may want distance from their in-laws post baby. There has to be a reason for this tension so please, get philosophical!