My grinding back in Halo 2 meant nothing-I had good times, killed a lot, and died a lot. Same with Halo 3, less with Halo Reach and 4 (the Old Guard were replaced by...less enthusiastic individuals, who went to COD at Halo Reach.) Same with every Call of Duty game. Same with Ocarina of Time and Majora's mask. Same with The (first) Legend of Zelda. Same with anything that you 'grind' in-at the end of your days, your time in a virtual world, unless you got a shitton/drug lord/Super 1% level of money for being on youtube or twitch doesn't really matter.