I do that a lot too, throw everything or anything .... or new things in, when it is a dish I know well already.

One time I made the absolute BEST meatloaf I had ever tasted anywhere, but because I "kitchen sinked" it with whatever herbs I had at the time and who knows what else, including the last of a jar of salsa, I have never reproduced it quite the same. I can add what I remember, but I didn't measure of course and well, although my meatloaf is still pretty tasty, it has never been quite as divine as that one was.