The problem with ditching DST (from my perspective) is that I'd want to shift my working hours forward and backward so that I could continue to 'move' an hour of daylight from the morning to the evening where I can make better use of it.
If the UK didn't have DST the sun would be rising at 4am in June. That means at least 3 hours of wasted daylight. I've said before that I'd support double DST for May/June/July in the UK and when I'm retired will likely wake up an hour earlier in those months.