"..rational time worldwide"? Like all of China in one timezone and Mumbai :30 off center? and Arizona? and that one county in Idaho?
I can't agree with any technical objections because there is already the need to account for all these bizarre details worldwide and even DST in the US changed in 2007.
There is however strong data and evidence that every year in November when we set clocks back and hour traffic fatalities increase, crime increases, retail sales drop and depression increases. Avoiding that is good enough reason for me to support this.