While I use a number of CAD programs for serious work, sometimes, when I just want a little widget like a flange for my laser cutter’s exhaust, it is just easier to do it in a few minutes with Tinkercad. You hate to admit you use it, and you know you should put in more effort, but - darn it - it’s easy, and it tastes pretty good. Tinkercad is like the hamburger helper of 3D design.