What's wrong with it is that for life to keep going the same, everyone has to make the same agreement. Your office now gas different hours but childcare doesn't so you need to get there one hour earlier and any service might do or do not so now you're juggling a bunch of +1/-1 in your head to make sense of it.

Office hours are not the only schedule in people's lives.

That's why it gets moved forward/backward at the European level.