I don’t use the word whom when I write. For a long time, I didn’t understand the difference between whom and who, so I stuck with what I knew. It seemed to work. None of my teachers in K-12 ever pointed out the mistake, and neither did my professors in college. In fact, it wasn’t until my senior year at CSULB that I finally felt I had a firm grasp on the two words. In English Grammar, I learned that the easiest way to remember the difference between whom and who is to replace whom with him or her and to replace who with he or she. For example:
We all know who/whom ate the last piece of cake.
Which sounds better?
We all know him/her ate the last piece of cake.
We all know he/she ate the last piece of cake.
Well, the second one of course, which is how we know that who ate the last piece of cake is correct. Yet, knowing the correct word usage hasn’t made me include the word whom in my writing any more than before.