While I do recommend AoC, I wouldn't suggest it for a long-time commitment.
A game launched ahead of its time (which is not a good thing because it kind of needed a better engine), with incredibly fun questing due to the background lore, unique combat mechanics combined with fun PvE and PvP battles and one of those games that were worth calling a potential "WoW killer" at the time. It had everything that somebody could ask for even now; beautiful graphics, graphical violence, detailed lore based on the Conan universe, fun combat, voice-freaking-acting and a lot of promise right off the start. That is untill you get to leave the tutorial area....
It's still a great amount of fun and worth throwing a little bit of money at it to get some extra areas and quests. But that's it really. The end-game is generic raids and that's about it. Some areas are locked to subscribers only, which are the end-end-game areas that you will have to go if you want to progress even further. Thankfully they improved their payment model, but it still is bad. There is some PvP to be had, but unless you are in the most populated server AND in one of the active and big guilds, you won't get much out of it.
It fell short due to it being rushed as all hell, which is painfully obvious. You get to be introduced to mechanics at the tutorial area that are NEVER used again in the game like a single-player mode for story quests and a nice hub city to link everything together. After that you are thrown ALL OVER the map in a fairly generic area system. No quests apart from a few that can be easilly counted with maybe just 1 hand and the story quests are voice-acted afterwards. You get to have to do group quests which requires pure luck of finding somebody at your level to do them with and due to you not having them done you will fall short later on (depending on your class, some are simply too OP on everything) and have to tediously go through annoyingly hard quests.
Also as I mentioned, some classes/builds are simply overpowered. Doing insane amounts of damage without long cooldown abilities and/or having too much survivability. It's one of the reasons that unless you are purely into the PvE part of the game and join a PvE server, you won't have too much fun unless you pick the objectively good builds.
In conclusion, it's still a great game due to the lore and the environments and Funcom 101 stuff that they have nailed in both their MMOs and I could even argue that you are missing out if you don't give at least the tutorial area a try. As a "Conan" game it also does what it does very well and you will love the world you are in. However, it has many issues including the payment model itself so playing to rush to the end-game is not adviseable.