Agreed. Anyone who quits BCT or even doesn't get off the bus, didn't take a slot from anyone. This is part of it. The academy already figures in a percentage who won't make it through BCT or the full 4 years. We see kids each year who "really wanted it" who quit. It is quite likely that the individual who quit or didn't even show up also really wanted. Maybe they wanted it their whole life.
More importantly; the individual who quit, EARNED that right. Their composite scored application was higher than those who competed against them. They earned that slot and they earned the right to change their mind.
It would be great if I, Steve, all the other LOD and ALO, along with the selection board were mind readers and could also see the future. We could appoint only those we knew guaranteed would make it all 4 years and go on to a great military career. But we don't and we can't. So in the end, those who earn the appointment receive it and they have earned the right to stay or change their mind.
If I am disappointed or upset with a cadet leaving, its not the BCT or even first 2 year cadet prior to commitment. Its the C2C or C1C who screws up, fails out, honor violations, drugs, or any other reason for getting kicked out. They wasted a lot of money and peoples time that could have been made available to others who need the help. But for those who choose to leave, any time from day 1 of BCT to the end of their 2nd year, best of luck to them. They didn't take anyone else's spot. They gave up their spot. A spot and an appointment that they earned and has every right to do as the feel is best for them. They earned that right.