Boxing Title Belts

Why is it that Boxing does not have 1 single title belt or 1 highest of title belts for each division? I know there have been talks of making 1 single title belt but it seems like it would be the outright best idea for the sport. Every major sport has one thing that every team or player quests for. That penicle seems like what boxing is lacking and a major reason why so many people don’t get very interested in it.

i guess you have to add weight to get the most prestigious belt