The antonyms for "committing memory" could be forgetting, ignoring, or neglecting. Forgetting refers to the inability to remember something, whereas ignoring refers to the act of consciously choosing to not acknowledge or notice something. Neglecting, on the other hand, is the act of not giving proper attention to something or someone. It is essential to commit memory when learning or trying to remember something important. However, it is equally important to recognize when something is not worth committing to memory and being able to forget, ignore or neglect it without negative consequences. So, while committing memory is usually positive, there are times when it is necessary to do the opposite.