I paid to play it for two months, but it got too boring. I'm currently trying a private server that lets you level 800 times faster just to see what a powerful character is like. I'll then likely quit forever.

However, I'm currently having tons of errors that keep shutting down the kRO client and I don't know what to do. Oh well.

As for the game itself, if you play on iRO and want to become a high level character, expect to spend hours and hours and hours (and more hours) in boring dungeons killing the same things over and over (while 80 other people are doing the same (60 of them likely to be bots). It takes forever to make enough money to buy good equipment. Trying to get rares to drop from monsters is an exersice in extreme patience. Yeah, if you kill the same monster over and over you'll eventually get the drop, but you might have lost your sanity long before then.

Another problem is lag. I have a pretty fast connection and computer, yet it still lags pretty bad. Lag can affect combat pretty severely (especially when I'm using my mage trying to set up firewalls).

Like TheAbominatrix said, it can be fun, but it's very very repetitive as well.