The choice of a firm or soft mattress is not a matter of likes and dislikes: it should be done in consideration of individual needs.
The anthropometric features of a person should be weighed when choosing between a soft or a firm sleeping surface. Obese or lean, tall or short people do not have the same needs for sleep surfaces. Men and women probably have different requirements related to their different body contours. Furthermore, the health status of an individual should influence the choice of sleeping surface.