Forgot to add oregano and what a difference it made!

I have been convinced that oregano is 100% in the recipe, especially when i bought a different brand of oregano and it smelt like kfc. So i have always included it in all my attempts. Well today i made my usual recipe with a few tweaks and also trialing aniseed instead of star anise (star anise works better, maybe i should have added more aniseed) and i kept telling myself "something is wrong? there seems to be less note and aroma" i finally realized i forgot to add oregano and wow what a difference it made to the whole recipe! i'm now even more convinced its in the 11 herbs/spices. This is just my own opinion and thoughts and posting incase it helps someone who is also thinking the same way.