TL;DR : Everyone in our streets hate our next-door neighbour. So much so that they are all trying to get them to sell their property. We are their only friends and have staunchly defended them (and their right to live on our street) .But after a series of events, I'm starting to resent them too . I feel horrible for thinking it but everything will indeed be so much simpler if they did move out :(
Deleted as there were too many identifying details and didn't want our neighbours to come across this post before we had a chance to discuss our grievances with them.
Thank you :)
Soundproof your windows
You could get much much worse neighbours then ones with a sick kid that's friends with your kids