I love this game. I love everything about the mechanic of card drafting, the beautiful art of the cards, and the wonderful theme. 7 Wonders is probably my favorite game of all time.
I would disagree with the fact that it is "just" passing cards around the table three times. Because,i n the process of passing those cards around the table, you compete with your neighbors in a spectacular fashion, trying to build up your empire of cards and resources to trump your opponent and deny him from success.
With each passing of a hand, you have to make a multitude of meaningful decisions, from deciding whether or not to pass your opponent a military card to finish his army, to deciding whether to start investing in scientific discoveries or civilian structures. Every little decision, from deciding who to pass your hard earned coins to for resources, from when to activate your second wonder stage, influences your opponents and creates a unique experience.
It tickles my inner architect/designer the same way Dominion would; in Dominion, I build my deck to be as smooth as possible so I can grab more points more consistently than my opponent, and in 7 Wonders, I build up my empire in the first and second ages to be a catapult to massive points in the third.
But that's not to say I don't think 7 Wonders has any flaws. There is some luck that might really screw you over, but the amount of luck isn't overwhelming and can sometimes be beaten with strategy and analysis. I find it similar to Dominion in this regard, with the shuffle luck and such. It is also true that after many plays, the game begins to lose its luster, its ingenuity, and its freshness, because it seems to become repetitive. I found the feeling similar to how I felt after playing the Dominion base set a lot of times, because there are only so many useful combinations and new strategies you can come up with, after which you crave more.
But as with Dominion, I found that expansions helped greatly in this regard. 7 Wonders: Leaders adds an extra phase to the game, with which you draft leaders, giving you many more options and combos like how Dominion: Intrigue or Seaside gave you more options or combinations. And 7 Wonders: Cities looks to add even more!
Anyways, I think saying that 7 Wonders is a game with no depth is simply untrue. Through my plays and interactions with my friends, I see a lot of thinking, a lot of socializing and strategizing about the best path to go. It might not be as clear cut as Dominion with a lot of its strategies and analysis, but it's definitely there, and I think it's unfair that some people would be so quick to dismiss it.