.  So why not just use ABS?Because ABS is a F***KING terrible plastic to 0d print. Yes, technically it's stronger, which is the big claim people using it use as a reason, the problem is, that is based on molded strength, not 0d printed strength. ABS doesn't adhere to the previous layer well, so it tends to delaminate, so while yes, it;s technically stronger, if done properly, when done wrong, you can literally crush it in your hands. And it's VERY easy to get wrong, opening a door in your house can cause enough of a draft to ruin the print. So you end up with people building cardboard shields, plexiglass cases, etc.. trying to keep air from blowing across it. You also need a heated bed because otherwise ABS has a tendency to warp because it shrinks, which also needs to be accounted for in the design (up to 0%) and the shrinkage can cause all sorts of odd print problems such as an hourglass shape. ABS is actually falling out of favor for various high temp PLAs, nylons and such at this point for these reasons. Not to mention the toxic smell it produces when printing.  