I read the comments and am often frustrated. Sure, chickens aren't perfect for every situation or every person, but most of the time when I see negative posts about raising chickens it is because:
1) The person has absolutely no experience with backyard chickens and is typing out of ignorance
2) They have experience with chickens, but usually from a time where grandma kept 100 in a small coop and didn't care for them as "pets".
Every time I get the chance I ask them if they have visited the home of someone who properly cares for their chickens and provides adequate space for them. I try to encourage them to take a half hour and visit a good BYCer's home that has 5 - 15 backyard chickens (hens) and discover that they are much more quiet and less smelly / nuisance than the neighbor that has 3 dogs in their backyard.
IMO, if people are allowed to keep large dogs in their backyards then they should be allowed to properly raise backyard chickens.