Piece on the One Show about those people who attach padlocks to bridges and it's being pushed as an "awwww isn't this lovely, it's a gesture of love, people come back every year to see their lock, such as shame when they have to be removed" and I'm sitting thinking the opposite.
It's no different from scratching your initials into the bricks of a castle, or spray painting a wall. Vandalism. Nobody cares that some random bridge is where you had your first date or your boyfriend proposed. Nobody wants to walk across a city centre bridge covered in padlocks which the council then eventually have to pay to remove.
Leave no trace.