>>532121579
Using it as back up for future units in case you get ass fucked? As nice as MLBing a unit is, not having it in the first place is a far bigger loss compared to having it, but not LB'd.

As generous as Nikke's rates are, there's no pity at all. You can go on a massive string of losses that annihilate your stash with nothing to show for it. It's far better to use gold miles as a safety net to catch yourself on units you want/tell 1% banners to go fuck themselves so you can hedge your bets on 2% banner units. One of the few times dupes really do matter that much is for the purposes of campaign pushing and PvP since 2% stats push your power up at the same time as raising that unit stats, so the 2% ends up compounding with each LB across your team. In Solo Raid, those dupes aren't going to mean shit unless you're full sending every single time with Core+7 for 20% stats across the board. 6% stats from MLB in comparison is fucking peanuts and unlikely going to push you past any meaningful thresholds compared to good gameplay and overloads.