Day 13 – Do you prefer canon or fanon when you write? Has writing fanfic for a fandom changed the way you see some or even all of the original source material?

I'm trying to stay as close to canon as I can, but I don't hesitate to bend it a little if it serves the purpose of my story. Some canon facts I simply ignore - even the original can be stupid at times. Some fanon ideas I find good enough to adopt. Some of mine even got adopted by other writers.