I'd say that depends a lot on what you want to print. Some people might be able to use Blender for technical parts, but
for most people traditional CAD software would be the better choice here.
CAD is great when you want to make a nice parametric model that you can edit as requirements change. But for a simple one-off part, I can often whip one up in Blender in a third the time it would take me to dimension everything in a CAD sketch.
You and I must make very different parts. Unfortunaley even my one-off 3D prints are never one-offs. I almost always have to go back and tune a dimension or two.