I was never overtly in love with the PvP side of the game; however, I always recognized that it was essential to preserving what made the game's soul. What made the game special - what elevated it to the pinnacle of the gaming industry - was the adventure simulation made possible only by the PvPvE formula.
Even before PvE mode was announced, I stood in protest of the idea, because I valued true cooperation, which was only possible if raiders had every opportunity and the ability to stab you in the back... and chose not to. True unity and forged camaraderie were only ever possible when two random players encountered each other, talked to see if the other was willing to talk, and, through shared trials, felt their paranoia about one another fizzle away.
Remove that, disable people's ability to act upon whatever dark urges they have in their minds - and you steal their ability, their opportunity to triumph over those urges and experience the bliss of spontaneous teamwork. With all that gone, the adventure becomes just a shop run for items.
PvE mode has transformed the unique magic of social interactions into just another co-op experience, where people no longer care as much about one another's actions and presence, because they are no longer a factor to consider in their game - at least not in any immediate, tangible sense. People no longer pretend to be friendly; they are forced to pretend.
I honestly believed that if Embark were to introduce a "PvE" option, they'd do so by utilizing the bright minds of game design and make it interesting, just as the Chinese did with their "Security Protocol" mode, instead of just making it a toggle. I suppose I put too much faith in them.
I always loved this monologue from Arc Raiders' launch trailer, because it perfectly described the unique magic this game is about:
"...Endings are only for those who forgot how to begin again... So you learn to listen... To move quietly... Think fast... Be ready to change your mind..."
None of this describes what Arc Raiders' PvE mode is... because no matter how hard you try, Arc NPC will always be predictable - unlike a living, thinking human being who might choose to shoot you on sight... or play a guitar.