The human and animals, when in nature, follow the night/day cycles, not an artificial clock time meant to synchronize an industrial society. IMO it's fine, and

The human and animals, when in nature, follow the night/day cycles, not an artificial clock time meant to synchronize an industrial society. IMO it's fine, and even natural, to have different time on winter and summer, but why does the change be one hour on every country and why changed all at once? If health is the goal, e.g. a 20 minutes change each two months seems much easier to adapt to.