Waiting for a game you want? Make the wait faster by playing Ragnarok.
Ragnarok Online: Low Rate servers: Low rate servers have, obviously low rates in ragnarok. Leveling is slow but fair. The item drop rate is very scarce as well. From what I've played, in low rate, level 90-100 is considered very high level and MvPs (bosses) are slightly weaker than in other servers. In other words, this is a very casual server.
Ragnaork Online: Mid Rate: (What I just typed on the first paragraph. It's basically normal ragnarok. Everything is balanced)
Ragnarok Online: High Rate: This server is what I play usaully when it comes to ragnarok. Basically, it's the opposite of Low rate servers. Leveling is extremely high, item drop rates are much more frequent, etc. High rate servers are mostly suited for people who want to get a very strong character to use to kill MvPs, WoE (War of Emperium), and PvP. One of the major flaws in high rate is that it can get very boring once a you're like level 200+. That is usually when the insterst of the game starts to fade away. Also, since there are so many high level players, Pvp and WoE tend to be highly unbalanced.
Overall, Ragnarok Online is an average rpg that has good gameplay and rpg elements but is not worth paying monthly so private servers are and option. Although I don't like this game as much as I did back then ( I was totally obsessed with it), I would at least tell every rpg gamer to give it a try.