Why are we quoting each other? I remember the comment before yours. I made it. Idiot.

Because quoting in a response provides structure to the response that improves readability.

Also, you are posting on a publicly accessible forum, not having a one-on-one conversation. In that context, that fact that you may remember what you said doesn't mean that it's not beneficial to repeat it for others.

The "idiot" comment was unnecessarily rude where someone was engaging in what appeared to be a good faith response, and only brings down the tone of your entire post.