I am curious where is the fun in level grinding to break the Balancing in games like Jade Empire.
You're kind of getting into the area of what is fun here, like some people wondering how I find writing fun, but I'll answer how I can. I receive a thrill seeing my character be bettered and grow more powerful and it's more intense when dealing with a female character. However, the ultimate expression of that improvement isn't really in the numbers. What do they mean anyway? Rather it's best shown when using those improved abilities against others. If an enemy that took 30 seconds to kill at level 5 still takes 30 seconds to kill at level 15 there is no feeling of betterment.
It's the thrill of being rewarded. Sort of similar like after weeks of arm curls, push ups and dead lifts you find yourself carrying with one hand what would have required two before hand. Have you ever spent a few months exercising only to find yourself moving furniture and suddenly realized. "Wow this is way lighter then before!" That's the best comparison I can give it. Except in a game it only takes me hours to get that buzz while with exercise it takes much longer.