Well I wouldn't say it sucks. It's just not special.
Music is kinda like building a house. Not just any schmo off the street can do it properly, but with practice and experience, one can learn to build a house. Some houses aren't shit and aren't spectacular, they are just houses - it took knowledge, work, and technique to build them but they don't inspire, while other houses are architectural masterpieces.
Music is kind of the same way. Most people can't do the stuff they rag on, yet it isn't special either. It's just kinda there. It's music, it's technically sound, it's by the book, but that's it. Nothing else going for it really.