Forced year-round pretending we're an hour ahead means more kids will have to walk to school in the dark, sharing streets with sleep-deprived drivers who are also up before their bodies say they should be. That's gonna kill people.
There is also a study that found a correlation between changing the clock to heart attacks incidents rising, suggesting that it might be caused by the clock change which triggers stress and sleep deprivation which triggers a heart attack
The Romans' did that as a naturally consequence of using sun dials for timekeeping. Hours were also shorter during winter. I think that would be a nice system to have.