Hmm, I used to live in Sweden, perhaps I can muse a little on this.
First, yes, tax is very high. On the other hand, the level of welfare is also very high, god only knows why I left when I should have been trying to recoup my hard-earnt taxes in maternity benefit and stuff. They are unbelievably right-on, I was told by a friend this week that they are considering passing a law to force parental leave to be split 50:50 between parents (sod choice) because women are still taking the majority of the parental leave, which is affecting their marketability in terms of employment.
Education - I'm not sure about this because it's hard to compare. A friend whose kids have just returned to Edinburgh after c. 5 years in Sweden are at least a year behind their contemporaries. Also, no-one ever fails exams in Sweden. No marks are ever published, or grades given in high school, so as not to make people who have done less well feel bad.
It's a very homogenous society, and it depends on that. For example, they have a 'crayfish' season this time of year (ish) where everyone gives crayfish parties (mainly an excuse for massive drinking) yet all the crayfish have to be imported from Turkey. Everyone has to take the same five weeks off in the summer. Five weeks - nice. All the same - bit restrictive.
Darkness - yes, it's not so bad, not great though. We were right down in the south of Sweden and it was pitch dark by 3:30 in midwinter. The sea froze. And the shops shut early "because it's winter". Shopping generally was a nightmare best not spoken of, buying booze even more of a nightmare - the off-licence shut at 2 on a Saturday (9-6 in the week), and that was the only place you could buy booze.
Oh yes, and the driving! Of course Swedes obey the speed limit without the pesky need for speed cameras. But most of the roads are single carriage way, so you are forced to drive at some ludicrously low speed for mile after mile after mile behind someone who won't get out of your way.
On the plus side, it's a very safe country, the people are extremely polite and I found them to be most humorous as well. Part of their success is in having a MUCH smaller population than the UK, it's not possible to compare, in my view.
The main thing was, their menfolk were much better trained than ours. The normal working day in Sweden is 8:30-4:30 and no-one would ever arrange a meeting to start after 3:30 because most people, not just the women, would have kids to pick up at kindergarten at 4:30. It was perfectly acceptable for a bloke to refuse a meeting outside those hours because of childcare duties, in a way that I think in the UK would still be odd or unacceptable.