Because there is a limit on companions in the party? In the future, there will be even more companions, will you try to take 8-10 characters to the party? Because "well, they can't just stand in the camp." This is a game, you can choose who will go with you, and you will have to choose anyway. It can also increase the number of playthroughs of the game, as it was in DOS 2. We're lucky our companions don't die here after the first act, not yet...
