Ragnarok private servers are great, especially the bigger communitys, it gave me a lot of fun for a long while and passed some time, you don't have a massive grind on them either since u can find the right one with higher rates, its all good log on and play log out when you want, its not like you always have to party to do things
Reminds me of my FFXI days god the grind and teamwork on that was a pain and took hours to put a party to gain exp or do a quest together but it rocked !