I think the possible answer as to "why no one cares" if you dislike Lebron/Cavs is that Lebron has been quite easy to dislike since he left for Miami, so he's old news. He's also a bit of a prima donna (understatement of the century right there). People that are familiar with the NBA and follow it regularly already know why you would dislike Lebron -- there are tons of reasons. There's no confusion there. People dislike the Clippers because of their flopping, which they have been doing since they got together a few years ago. They are whiners, complainers, and choke artists. Everyone knows why someone would dislike the Clippers. Etc. for the rest.
As annoying as it is for me to watch Golden State play, they haven't really done anything extreme to annoy the casual viewer. Sure, they can play dirty and as of late, throw very cheap shots (Draymond comes to mind), but the way they are viewed by the majority is of a three point shooting team that can also pass and defend. They have baby-faced MVP with a great image and probably have the best shooting backcourt in history, or at the very least right at the top. People want to watch that, and they just broke the Bull's record of all time wins. Also, the NBA I suspect is working hard to maintain that squeaky clean image, which is why I think they refused to suspend Green, which IMO was easily the correct solution. No way on earth that that was a basketball play, period.
Golden State is a money making machine for the NBA and for people that don't really "get" basketball or haven't watched it for a long time, they are fun to watch. I can easily see why it would be thrilling for a casual fan to watch Curry pull up for 28 feet and sink it. I cringe every single time, but someone out there loves it. That's why they don't understand the hate for the Warriors. In their mind, what have they done to make you hate them?
The question of whether or not their style of play suits one person or another is a personal choice. Everyone has preferences. I'll be honest, there are parts of the Warrior's offense that is beautiful to watch, but it's those jack em up threes that I cannot and will not ever support. That's a bad shot period, even if you hit it. I also am not a fan of small-ball, which essentially describes the Warriors to a T (but they do have the ability to match up if needed). I just don't understand the psychology behind the rest of the NBA teams. If they go small, I go big and I kill them inside. Last I checked, layups were still completed at a higher % than threes.