You probably aren't sure about my argument as it is not aimed at you. DST is useless at the equator, and useless at high latitudes. However, it's useful at middle latitudes, and that point is often missed by many. I would agree with 35-45˚.

I also live above 60˚ north - today I had 2 minutes less daylight than you :(

I think some of the negativity towards DST here is due to failure to consider the local needs of other people. I guess that's my argument. The day is important, and you know the importance of things more when they are gone.