Skyrim has to be one of the most generous games you'll ever spend your money on. There are so many things you can get involved with. In addition to the fascinating main quest, you can: become a lethal assassin; become a master thief; join a civil war (on either side!); become a vampire; become a werewolf; get married (to a male or female); purchase and furnish homes; go to wizard college; become a master blacksmith, alchemist and enchanter; commune with the mysterious and powerful Daedric gods of Tamriel and do their bidding; clear out nests of bandits, vampires, spiders and undead; explore vast underground ancient dwarven city ruins; solve puzzles; pick flowers; mine valuable ore and gems. In addition to these and many other activities, you can endlessly explore, explore, explore!
And I haven't even mentioned the beautiful horses you can buy, steal and ride.
The evil genius of game director Todd Howard and his talented team is that they want to get right to the essence of electronic gaming: they want to create a heady world of enchantment, danger and freedom that seduces you. And seduce it does: I would recommend picking this game up during a vacation or when you're, ahem, between jobs.