makes permanent not fun

But over time a gradual process has occurred to me, has the non-stick properties of the pan lifted more and more. In particular, in the center of the pan, it is now so that things adhere directly. Also you get it no longer 100% flushed clean as always remain small black dots in the middle.

I do not know if I had the pan frequently to lubricate or whether there is from my user page made an error ...
But in its current state, I take this cup only, when everyone else is dirty or in use.

Would I buy a second time, and I find very sad!