With the disclaimer that not 'everything' one hears on the news is accurate, we heard one international news report today that all the locks (and the structural elements to which they are attached) will be warehoused somewhere until the local authorities determine what to do with them all.
I personally think if they are melted down and re-cast into a huge 'tasteful' public art piece with a romantic theme, that would make a nice tourist attraction. And, if grids are then put up around said public art, so tourists would have a 'safe place' to do the lock thing, it could become a 'destination.'
While the structural risks to the bridges (not to mention how it detracts from the historical beauty of said bridges) is a huge issue, I'm sure many couples have chosen to go to Paris (whether consciously or sub-consciously) so they can 'lock their love.'
I do agree with Norma -- I'm sure a large number of those locks belong to the HUGE percentage of divorced people or simply failed relationships among those who had not yet married. And, one could also hypothesize that some individuals were 'serial lockers' with multiple loves (over time.....well, okay, maybe even simultaneously...giggle, giggle).
Even more infuriating to me is to see people deface tree trunks. The initials carved into trees in the Generalife Garden in Barcelona is an example of people not respecting nature and historical sites!!!