Are my standards too high?

The scenario I'm about to relate happens quite frequently at work, and it shocks/stuns/amazes the hell out of me each time it happens.

When a woman comes in to be checked, we put her information into the computer so everything can be archived on the hard drive. Part of that information is her name, obviously. I'll take a patient into the room, have her go into the bathroom to change, and while she's doing that, I ask her support person, usually the father of the baby, all of the information I need. Quite frequently, when I ask him how to spell her last name, he'll say, "I don't know." You don't know? You're having a child with this woman and you don't know how to spell her last name?! I realize that it's not necessary to know a person THAT well to do what it takes to make a baby, but really, over the course of the 9 months it's growing inside her body, don't you think that might be an important thing to learn? And the first baby, sure, same thing. But the third?! You have 3 kids with this woman and you STILL don't know how to spell her last name?!

So again I ask, is that too much to expect? Are my standards too high?