Sounds? Tires rolling, perhaps, but anything else is just annoying. I do not want to hear my freewheel clicking. I do not want to hear the chain engaging the sprocket teeth. I do not want to hear the creaking of this or that. And I most certainly do not like hearing my wife complaining about the too many bike thing!
Most of my bikes are quiet and that is just fine with me. To be honest, I do not even remembering listening to the sound of tires on pavement, or anything else. Now, of course, I will be listening for just that:-(
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"98% of the bikes I buy are projects".