We already gave the reasons why.
It starts slow and has a steep learning curve. It takes a few hours to understand everything, and to grasp the scope of the game. There are a ton of options, the menus are a bit confusing, the map and compass system take getting used to. It just takes some time to figure everything out and really get sucked into the game.
There's no way 10 minutes can give anyone a sense of the game, it probably took me closer to 5 hours before I was fully sucked in. And I wasn't liking it much the first hour or so as the interface takes so much getting used to and the story is less linear and enthralling than in say Bioware RPGs or JRPGs.
Sorry for being an asshole, having a shitty day and I hate when people make comments about games they barely played espeically for RPGs which tend to take a few hours to get sucked into.
It's not a perfect game, like I said above it's probably the most flawed game I've played that I've enjoyed this much. As noted the menu's suck, weapon's degrading sucks, the map sucks, the compass sucks, there's a lot of slowdown and pop up, lots of glitches, it freezes up sometimes etc.. But at the end of the day the world is just so damn big and there's so many quests (with a lot of variety) that are so fun to do and explore that it's easy to over look the flaws.
So if you're really into western RPGs I hope you give it another shot and put some more time into it and see if you get sucked in.