I'm not bored; I'm not a wolf who thinks that MMOs are just about grinding mobs and reaching level 100500+.
I played Perfect World: I played it the least, but from what I played, the only difference between Lineage 2 and Perfect World was the size of my druid's chest.
I played Lord of the Rings Online: there were few players because it was a paid game, but at least the quests were somewhat more interesting and diverse than in the previous two. There were no schoolchildren (although it was a PvE European server, and schoolchildren like PvP), but it still got boring after a week and a half. And then the free key runs out anyway. It should have only been given for a week, so the game wouldn't get boring so quickly.
By the way, I played on a Russian paid server a year and a half ago, and on a European free server six months ago. There were few players on both.
Although in the second case, the server had only recently become free, so maybe people haven't started playing it in large numbers yet. Or maybe people just want to grind in Lineage 2 or WoW and kill mobs.
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In any case, even if Lineage 2 or any other game becomes more interesting after a certain level, I don't want to play something boring at low levels. Heroes of Might and Magic 3 is even more interesting