I will sometimes play with Tinkercad for a quick model or go into more depth with Fusion 360 for fine control. In both cases, I aim to make useful, fun, and sometimes crazy things.
Nearly all of the models I make are for 3D printing.
Along with the models I make I also print models that other people have created. One of the great benefits to having creators posting their work online to share is that everyone can benefit from them if they choose.