I can't sing “I Believe I Can Fly”. I sing that horrible. But I can sing “I Gotta Feeling” good. I wrote it for my capabilities. So I Gotta Feeling is just about let me make a song to inspire people to have a good time.
My favorite scene in all of movies is Gregory Peck in To Kill A Mockingbird: You see him where he's on the porch, and his face is almost completely obscured. I don't want to see his face.