Depends how you value your time I guess. I'd rather be making the things I need, than making the tools to make the jigs to make the machines to make the things I need. I've done enough machining (trade engineer) that it isn't "fun" but a means to an end.
Certainly some things can be made cheaper and easier (I live a long way from a small town - things often aren't even in stock) So while yes, technically I can make a large series twist drill, I'm infinitely more likely to order one and pick it up on my bi-monthly trip through town. Ain't no rush jobs round 'ere.