Why Y-Axis Should Start at Zero for Accurate Data Representation

I find it super weird that Y axes don't start at zero by default, especially when plotting percentages; I can now go and force them to do that on a case by case basis, but I shouldn't have to, since starting the Y axis as zero (when you don't have any negative data) is the right thing to do 99% of the time, and not starting the Y axis at zero can be very misleading (and has been, in my case, in several situations)