Well, for me a big part was "I finally can buy myself the lego-robot my parents never bought me because it was too expensive" .

The fact that my 5 year old likes to build lego and is interested in robots is a nice bonus :D

And if your five-year old is anything like mine, brace yourself for the noise it can make :-) (most programming she is doing on her own are the embedded activities that produce music, sounds, e.t.c.)