Maybe you should learn how to empathize if you fail to understand how people can have different opinions?
Joking aside, Sky 3 isn't my favourite, but I like it specifically because it is different and weird and unlike the rest of the series. It's refreshing not needing to worry about missing BP or some sidequest (my biggest complaint with the rest of the series) and to play a game in the series that's paced so slowly that it needs multiple games to finish a single narrative (disclaimer: I give props to Zero for being an exception and ending its story in one game). The music, as has been mentioned, is phenomenal. For lore-heavy fans, Sky 3 offers some of the most rewarding replayability since Falcom keeps building off plot points first seen in this game. As for the gameplay, there are some major differences from the game before. First of all, there is far more customization, in general, in terms of party construction, orbment set-up, and equipment than there is in the preceding two games; moreover, the bosses in Sky 3 are generally more difficult and require some better knowledge of how to customize and create parties effectively. In terms of the dungeons, Sky 3 adds a few new interesting twists, namely in the form of some dungeons that require multiple parties to complete. The game also makes massive improvements in terms of quality of life by adding great quick-travel options (I seem to recall you complaining about the final dungeon in Sky 2, so you should appreciate this difference). Personally, I believe that the games after Sky 3 play better than it does (which is why it's not my favourite), but Sky 3 is the earliest game in the series that I actually enjoy playing. I'm not sure if you've finished playing it or not, but if not, maybe play the entire game before rushing to judge it.