The ending of 3 was sad, but it was a healing sadness, that left off with a lot of hope and optimism for the toys. They had a new kid who loved them, and Andy would move on with his life with all the gr8 memories of his childhood, knowing that his toys were in good hands. There was even a nice long character arc that Woody went through which was nicely tied up at the end of Toy Story 3.

I agree that 1 and 2 were better than 3, but the ending was perfect.

What else could they possibly do.

I am concerned.