I do agree with the 'musics more important' philosophy, but who wants to hear beats that use the same drums, the same stock sample sounds, the same patches etc. Its bad enough when you hear that from the same producer but imagine if every hip hop producer ever had used the same snare etc. Theres hundreds of drum breaks out there and even more single snares. IMO you are being lazy if you use the same everything on every track you ever create. If a new producer came on the scene that always did his tracks at 90 bpm, I would also think he was lazy. I'm sure everyone sticks to some sort of 'rules' (ie forcing yourself to try something new) otherwise every track they made would be too similar.