Bleh.
When did this become an either-or proposition?
You go recruit retired professionals. I'll go recruit young people. Someone else can recruit soccer moms, and yet another person can go after teachers. Everybody wins.
The only way to lose is if either:
A) You believe one of these groups should not be participating in Wikipedia
or
B) You believe efforts to recruit professionals will actually interfere with my efforts to recruit young people, etc.
If you believe A) then frankly I believe you are out of touch with the ethos of the projects. Different groups may need a different amount of guidance before they are prepared to contribute, but there is no group of people we should be categorically shutting out or discouraging.
If you believe B) and somehow think that recruiting one group somehow interferes with recruiting other groups, then I'd like to see an explanation of that. It seems unlikely in most cases.
Besides which, there are many things we can be doing (such as improving the editing interface and documentation) that should widely benefit most groups of potential new editors.
-Robert Rohde