Be aware that many or most 3D printers create an incredible amount of plastic dust and microdust that floats in the air, pollutes your home, gets in your lungs, etc.

If you've ever given a shit about microplastics, do your research when shopping for 3D printers. And if you don't care about the environment but do care about your health, take precautions as far as PPE/where you use the machine.