I just wanted everyone's opinion on this. I think it's a bit different than prestiging in multiplayer and also depends on how much you play zombies. I can go for several mid length games (10-20 rounds) and/or one really long game (20+ rounds, everything unlocked) per day before I had enough and don't want to invest that much time in it. The reason I say it's different than prestiging in mp is mainly the gobblegum unlocks. You can still get guns out of the mystery box or off the wall, while they may not have all the attachments you want, they will still function. I use the Anywhere But Here and Alchemical Antithesis gobblegum, which needs to be unlocked at rank 10 & 35 respectively and I don't know if i feel like going through all that to get them unlocked again.