Given that Congress recently extended DST in the name of saving energy, I doubt there is much appetite for abolishing it. While the benefits are disputed, the benefits of no DST are also disputed, simply because almost no industrialized region has abandoned DST, so there is no data. Clearly DST is a stressor, but there may health benefits to stress induced hormesis.
Personally, I prefer DST simply because it gives a longer block of sunlight in the evening, when I can be active, at the expense of daylight in the morning, when I am asleep anyway. I'm not sure my sleep would improve with the extra light in a non-DST world.
It's a red herring. People will naturally adjust their sleeping, working and leisure time by 1 hour so the extra hour of sun will have disappeared completely. In fact it may have already happened, consider what time your grandparents used to start work with what time you start work.
No more or less than we can say "We're staying on standard time year-round". We've adjusted when DST starts relatively recently (twice, I think), and it seems several countries have semi-permanently shifted to DST: http://www.timeanddate.com/news/time/
Computers pick up on published timezone databases automatically (there was a big mess a couple years back when someone tried to copyright it or something, and they ended up backing down), so any software that can handle any form of DST should have no problem with a permanent shift - and probably by any amount.
Personally, I prefer DST simply because it gives a longer block of sunlight in the evening, when I can be active, at the expense of daylight in the morning, when I am asleep anyway. I'm not sure my sleep would improve with the extra light in a non-DST world.