I realize you were throwing something together with your wife. When "describing countersunk screws" is presented as insightful it is clear we are not discussing professional work. But when you said "While that amount of info and detail might be needed by a professional making furniture (and actually I don't even think that is the case if you are good you can usually make do with much less)" you were talking about professional furniture.

I do not understand how/why you are making statements about professional woodworking. It does not seem like you have any idea about what it takes to keep a professional shop in business. It was hard enough during the boom and now that a lot of that custom work has dried up it is even harder. There is a reason why one jackrabbit bit is $45: Clipping one drill to your belt and grabbing the other is a waste of time AND it is not consistent. Wasting time like that is deadly for a professional shop even the places that can charge a premium for "artisanal/handcrafted" work.

There are a handful of shops that do have to worry about assembly line production speeds, but they have names like Sam Maloof attached to them. And lets face it Maloof did not win a Genius Grant double fisting Dewalts.

  > I have three drills

Awesome, you must be pro.