Neutering a dog is the responsible thing to do, there are so many health issues with not neutering from cancer to pyometra. Most of the surgeries we have to do are removing mammary tumors from dogs that have been unsteralised. They are then put through huge surgeries, rather than a 30 minute quick neuter.
Pyometra, is a killer, and I nearly lost a dog that had this due to an irresponsible owner, who simply didn't give a damn. A female dog was tied to the gates of the pound one day, not only did she have this killer infection, but she was blind and terrified.
This infection, literally means "pus in the womb" and is an infection that acts quickly taking over the uterus, and in most cases causing death. Every time you allow your female dog to have a season, you are putting them at risk of getting pyometra.
So, when you tell me that you love your dog, and it is "personal" choice not to neuter, I don't consider it love when you are endangering that dog. In my mind you are irresponsible, and I don't want you having one of my dogs. You can then go on to try and justify your decision, and often you will get abusive calling me rude because I have an opinion, just like you do.