Nah. My best friend growing up had that effect on his old man (although my influence likely played a huge part in that). In retrospect Leon was actually a pretty cool old guy, but his youngest really sapped the life right out of him. I know that five years before he died his doctor told him that if he didn't quit smoking and get into better shape he'd have at best five years left. He didn't quit smoking and, truth be told, honestly seemed to be at peace that that pronouncement. I've no doubt that he loved Jason dearly, but it was clear that life had just beaten him down.
Now that I think about it, the only times I recall Leon smiling was once when he was talking with my grandparents (his peers) and when he was in a casket.