I was thinking about this after our conversation at Christmas dinner, UP. You said something which I took as a warning that focusing too much on skills takes the fun out of diving. And on the way home, I was contemplating that.
I do some dives just purely for fun, although on EVERY dive I am watching my buoyancy control, evaluating my trim, and practicing my back kick. Every dive is an exercise in being able to place myself precisely where I want to be at any moment, which I think is both an important skill and one which enhances the dive tremendously.
But then there are the dives like the other night, when Kirk and I went down for the sole, stated purpose of practice -- S-drills, valve drills, and line running and following exercises. We were WORKING (witness the fact that my SAC rate was about twice normal!) and you know what, it was SOOOO much fun. I had a grin from ear to ear when we ended the dive that lasted the whole drive home. Working together, watching the flow of responsibility between the two of us as we were cleaning up line, looking at how the communication was becoming second nature -- that's FUN.
I invited my husband along on that dive, and he said, "Naaah, you guys are going to want to do drills, and I don't want to drill in the dark." (Of course, I asked him, "What do you think a cave class IS?" The difference is that doing the drills is a form of play to me, even though they are quite serious functions. Playing the game of, "Can I do an air-share and not change depth more than 1 foot?" is a kick. I lose it most of the time, but it's still fun to try.
Regarding training at depth, I was very impressed with Joe Talavera's Rec 2 class that we took in October. All the skills Joe thought we ought to have to operate safely at 100 feet were practiced first in 20 feet of water, and then in 60, and then at "operating depth". We know we can manage valve failures, air-share, shoot a bag and ascend as a team from that depth, even if it isn't always exactly pretty. I do think you have to practice shallow first, though . . . My first tries at bag-shooting would have had very undesirable results if I had done them from 70 feet!