My reasoning is why is it needed ? Public Safety Radios systems dont use roger beeps and have worked just fine for years. Ive never once seen the reason for it in any of my communications. My repeaters are used all the time and users know how to operate on them. I guess its just how you use a radio or have used one. Ive never had a FF or SAR unit walk up to me and say "hey I need it to beep so I know folks are done". You will also not hear it on most commercial LMR systems. Highway departments, water departments, tow trucks, parks and rec departments all know how to use a radio.
As said its all up to the individual, but I dont allow it on my repeaters and dont plan to change that.