I hate the waste in the process. The skirts don’t really bother me, but when you design something and it takes a few versions before it fits, that ends up with a lot of trash parts. Or worse, when you print something on a whim, or a test fixture, and even the final version is garbage.
There was some survey I responded to asking what percentage of the plastic I use is trash. I think it is over 50%, probably over 75%.
The stuff I keep is worth it (in terms of money and plastic), and the whole process is enjoyable. I would just be doing the earth a favor if I decided to read ebooks instead.