I got into autofocus relatively late. I bought a D70S in 2006. I marveled at how quickly I could take a picture without having to worry about manual focusing, like I had to do with the Canon AE-1. I then moved up to the D300 which is my main camera now. I hope to move up to the D700 soon so I can have a full frame body.
I also own two Leica cameras (the M3 and the M6) and I find I can manually focus rangefinder cameras without too much difficulty, even with my aging eyes. But when I need autofocus I use my D300.