Because we're builders, we can make stuff for our shops. We also have manufacturers which are happy to sell us similar stuff. For instance, you can make your own sawhorses, or you can buy them. You can make a workbench, or you can buy one. You can make your own jigs (for instance a shelf-pin jig, or a hinge mortising jig), or you can buy them. You can make your own router table, or buy one. You can make most of a dust collector, or you can buy one.
So what's your choice, and why?