(((Irish))) you are right, its things like that note, filled to the brim with a little boys love, that make you forget all the pain-in-the-ass stuff!

And btw, he's a very lucky little boy to have such a caring Grampie and he'll never forget the things you did with/for him. He'll know that even though the rest of the world gives his younger brother most of the attention, he's special to you.