In my opinion there is absolutely nothing wrong in showing pictures of our families, relatives, friends, etc - as pictures standing by themselves.
What makes a personal picture to stand by itself ?: The quality.
Thus we have very recently seen outstanding photos by BudGreen, and some year ago there was a whole series of outstanding pictures of one of our members about his girlfriend, about which I opened a thread.
http://www.rangefinderforum.com/forums/showthread.php?t=24624
And there are other examples at other sites.
Now does Rover photo owns enough quality to be such a stand alone photo?
I think so. It shows a very nice dialogue between the penguin and the kid, it is well composed, it manages to show a bit of the kid's face, which was not easy angle to find - therefore it is a very nice one.
What is a "father's pic" in the negative sense?: a badly composed image, which the father is showing and not reckognizing the bad composition out of his love for his kid.
In general, as photographers, emotional involvement with the subject is one of the most powerfull sources of creativity, and our most closest beings are no exception.
On the contrary, love for our relatives is one of the most deep dramatic issues we can possibly have.
Cheers,
Ruben