Prestige mode

Just started going through Prestige mode for a second time on Call of Duty: World at War. I really don't see the point cus I don't care about rank. What I do care about however, is that when I earn experience after level 65 it doesn't earn me anything. Taking prestige means at least my exp points aren't going to waste. Plus it stops me turning into one of those players that relys entirely on one weapon or feat to win everything. I see it as exercise, so I don't get sloppy :P