The practice has been both praised and criticized. Adding daylight to evenings benefits retailing, sports, and other activities that exploit sunlight after working hours, but can cause problems for evening entertainment and other occupations tied to the sun. Although an early goal of DST was to reduce evening usage of incandescent lighting, formerly a primary use of electricity, modern heating and cooling usage patterns differ greatly, and research about how DST currently affects energy use is limited or contradictory.
DST clock shifts present other challenges. They complicate timekeeping, and can disrupt meetings, travel, billing, record-keeping, medical devices, heavy equipment, and sleep patterns. Software can often adjust computer clocks automatically, but this can be limited and error-prone, particularly when DST protocols are changed.
If politics or business has a hand in it... it is meant for their good, not ours.
The world is mostly (vertically) divided into timezones. We/I here in Saskatchewan, Canada... have no problem going on with our lives, not using Daylight Savings Time.
I guessing this was somehow thought of, for business to gain from it.
Seriously......... nothing changes in my life, because I'm in a province that refuses to use DST.