In fact, both are now very firmly established and, with their 1996 announcement of OpenType , Microsoft and Adobe have jointly declared they intend neither to happen.
Designers routinely use cubic curves to represent all the curves they care to.
However, some of those who have used the rare software that allows native editing of TrueType curves say that its quadratic outlines are easier to manipulate than cubics. But TrueType has capabilities making continuous curves easy and efficient, which PostScript makes more fiddly. At first sight, Type 1's hints are pretty easy to understand. Although a font with well-defined hints will certainly rasterize much better than one without, it is not possible to specify precisely which pixels will be turned on, even for a particular size and device. Because the same hint always performs the same function, hints are easy to extract from the font file to edit visually along with the outline.