The assertion that the countries which do not use DST are "mostly in Africa and Asia" is an odd way to put it. The countries that DO use DST are more of the exception now: https://en.wikipedia.org/wiki/Daylight_saving_time#/media/Fi...
In Italy, for example, having DST means you avoid dawn at 4am in the summer (getting nice longer evenings in exchange) _and_ dawn at 8.30am in the winter.