Hand Cut Dovetails - Why?

I have started attempting to cut some dovetails by hand.  No one has shown me how, though I've watched it being done on The Rough Cut Show.  My wife wanted to know why I was doing dovetails... what for?

Well I guess, in my mind, being able to do hand cut dovetails is a milestone skill for woodworking.  It would make me feel good knowing I can do it.

Here are some pictures that show I really can't do it ... yet.

This end pin is actually pretty good:

This one is OK.

This one is not so good (and neither is the picture).

And this is just aweful.  I don't know what happened here, but hey, that's why you practice.