You haven’t said anything negative about your in-laws in your original post for me to think that you “hate” them. However, yes, I did think that maybe you wanted to split from them because you had not addressed (in your original post) the possibility of having the other brothers entertain guests from time to time. Nor had you earlier said that the brothers don’t do much. My guesses were based on the limited info provided. I thought…well…okay…if she hasn’t mentioned taking turns with the entertaining…then how else does she want yo uncrowd/cramp things…and why would this possibility hurt/offend the parents. Again, I can only guess based on how much info you tell us.
Now you’re saying the brothers and their wives don’t do much. This doesn’t tell us if you’ve ever tried assigning responsibilities to them…if lack of interest is deliberate on their part… etc etc. Consider discussing the possibility of taking turns with entertaining with your husband.