Is there a reason to be thankful

All religions insist that we have to thank god for the way we were created. We can breath and walk and see etc...
I was wondering.. Should a blind be thankful.. Should a paralyzed be ??
the answer is: yes... He has to look at somebody in worse situation and see how much god has given him..
but it we go this way we find out that the only one who shouldn't thank is the one coma.
well let's look at it in different way.
If we say that god has to do his job right to deserve our thanks.. So everybody with a handicap is a failure..
If you are to create somebody and want him to thank you for what you did ...How would you do that?
would you create him blind ?? Paralyzed ?? And expect to be thanked.. Would you give your created soul cancer ?? Would you ?? And expect them to think that you did that because of a hidden wisdom and still thank you for what you did ... You are better off not creating anybody and so is god.