Unbelievably addictive, beautiful & convincing as the best sci-fi movies and very romantic.
But once you decided to go for it, please take your time and read guides, tips & tricks in forums, etc. And that’s nothing sensational again- there are lots of games (incl. WOW) that you cannot play in full without reading the guide books.
The bottom line: don’t buy it! Otherwise you will be spending your nights in the outer space…