I'm 62 with an open mind, and listen to everything from Beethoven to the Sex Pistols, I've never heard of Muse so I just had a listen on google, I wouldn't go out of my way to listen to them, in the same way that I used to go out of my way in the 60s for, say, the Stones, and the Beatles, and Bob Dylan... But, they seem to be fairly good musicians and they certainly don't suck. I think in life, far too many people confuse like and dislike with good and bad.
Is it that you don't like them and so think they are bad? I dislike most of Bach, does that make most of his music, bad, I love the Sex Pistols, does that make their music, good?