I craft all of mine! I like the look of some of the tools you can buy (especially the dark/ black ones9 but sicne they break so quickly, it just seems like a waste to me? I'd definitely consider buying them if they happened to be more durable than the ones we can normally craft though!
Depends. When Nook's Cranny is closer than my house from my current position (I put all of the crafting materials and a workbench in my house), i'll buy them and vice versa