I think the main dislike of the Dragon Age games comes from RPG purists who wanted something more in line of the originally hardcore RPG style of Bioware. Dragon Age was supposed to be like a spiritual successor to Baldur's Gate, but the RPG mechanics are more streamlined (or dumbed down if you'd like to be insulting).
I played the demo for Dragon Age II, I enjoyed it, I'll probably play them someday. But it definitely doesn't command the depth that Baldur's Gate had which I don't necessarily fault it for, but many seem to.
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