Questioning keygens... are they ALWAYS illegal?

Question

Ok... so we all know people will usually use a keygen because they want a game for free. In a sense though, these keygens may not be illegal. If I am correct you already own a license to use the program if you bought the product. What if you lose your key? Wouldn't it be ok to use a keygen then?

Answer 1

Keygens aren't necessarily illegal. if you own a license to use that software you own a license to use that software.  

Answer 2

Keygens are always illegal and you can always get sued for using them.

Even in the case stated above.

If you lost a pair of sunglasses from a store, you wouldn't expect them to give you a free pair of sunglasses would you?

But yes, legally, they are illegal.