Why do people like Halo Reach when it is so much worse than Halo 3?

Well thats ALL in your opinion. personally I like many others love all the things you hate about it and many hate what you like. its all in peoples opinions and not everybody has the same opinion. besides bring this to the forums and rant. you'll get some good answers there. and if you hate it so much then why not just play halo 3 some more or play something else? its not like nobody plays any other game.