Idk about you guys, but you are legally required to have a first aid kit in your car where live, so there are plenty to salvage same is for water, there are tons of water bottles, that don’t go bad in the supermarket and your water purifier is gonna break at some point, so you’ll have to move to alcohol anyway.
maybe they just assimilated hostile species, but I think they’ve always been kind of invasive.
I imagine the borg started as a peacefull cybernetic species who radicalised them self or their ai made some mistakes maybe. Or they started as an ai that became evil and assimilated biological life on it’s quest to perfection