For Kevin pizza and icecream are equal to happiness.
You can get part of the meaning of life itself when you see your loved ones smiling-
Other part of the meaning is the time we dedicate to those persons we love and the effort we take, no matter what, to bring that happines to them. The memories we create even during bad times are the foundations of their stability as grown ups.
We've been through a lot together as a family and together we can see how everything we've done is giving back something for our effort and there's nothing more important for us than seeing this little guy smiling.