For daily life around here, at least, having a temperature scale where water freezes at 0 degrees is pretty convenient. Since I live in a place which has real seasons, so a quick glance at the thermometer will tell me if the roads are likely to be icy even before my morning coffee has had time to work (don't need higher cognitive functions to see if the mercury column is in the blue or red bit of the scale).
For scientific use, of course, whatever scale you choose to use had better start at absolute zero, anything else would simply make all the formulas needlessly complicated.