At this point, with docking being done for so many generations, those in favor of this argue that if docking were to suddenly stop, the Boxer breed would not carry 'good tails' (tails would too heavy to sit correctly, the dog's balance would be off, etc.)...
The deliberation between those who favor it and those who are against it goes on to say that within a short amount of time the only breeding pool available would be dogs with 'bad' tails that could not produce viable offspring. Of course, all of this is debatable and the Boxer breed is as strong as ever in countries where this is illegal.
Putting health and breeding issues aside, some simply believe that a Boxer should have cropped ears and a docked tail to have the "Boxer look".
Consensus among those who do choose docking, dictates that the dog looks stronger, more powerful and more intimidating with the cropped and docked appearance.
Those who have a dog with a natural tail or those who have a litter of newborns
and choose to forgo this procedure should feel just fine about that decision...many owners have dogs with the tails that nature gave them.
In regard to dog show requirements, the debate is still on. Some clubs do not give an advantage to a docked dog and others state that docking is expected for a Boxer to conform to requirements.