Next tine someone tells you that a light rail or streetcar or trolleybus would ruin the beautiful streetscape with their overhead wires, show them a picture of Vienna, where I am now.
I think it depends a bit on the variety of architecture on the street. In cities like Vienna and Paris most of the wired streets have pretty uniform building heights, and the wires can look like they're part of the general grid.
Places with less uniformity in height or street width start looking messier with wires because your eye is drawn to the breaks in space. There were places in Italy with medieval towers spaced differently to the grid where I noticed the cables were like untidy spider webs.