It falls in the category of "guilty pleasures".
In the '70's, you were generally either into rock or disco. I fell squarely into the rock camp (ok, still do....) as a rock guitarist. Despite my die-hard rocker status, and as much as I loathed most disco "music", the Bee Gees were more than a cut above. I may love an ear-splitting power chord.........but no one could harmonize like the Bee Gees. The fact that they were brothers seemed to give them one mind and two ears amongst them, and when they hit those gorgeous three-part harmonies, to this day they can send chills down my spine. If you're a musician, you know exactly what I'm talking about.
May the Good Lord take Maurice Home.....and may He bring peace and comfort to his brothers and the rest of his family. Deepest condolences from my family.