I wonder if anyone recalls the little worker robots in the 1972 movie "Silent Running". [1] I don't know what it was about those fellows but I felt emotionally

I wonder if anyone recalls the little worker robots in the 1972 movie "Silent Running". [1] I don't know what it was about those fellows but I felt emotionally attached to them. It was not that they had any visible means of conveying emotions. They just went about their tasks quietly and diligently. For some reason they pulled at my heart strings. It was quite heart wrenching to see them destroyed in the last part of the movie. [1] - https://www.imdb.com/title/tt0067756/?ref_=fn_al_tt_1 https://www.imdb.com/title/tt0067756/?ref_=fn_al_tt_1