You can stick with the PVE on release. There will be more missions you can play. PVP isn't always for everyone.
That being said, it's not strictly PVP in the dark zone. It feels much more like a lone wolf trying to survive (if going solo). Honestly, it makes it much more intense than the PVE ever will feel.
I used to play Ultima Online at release. In that game, if you were player killed, you lost everything on you. All of your gear, everything in your inventory. It was devastating at times, but it made the game so much more intense with big rewards if you could succeed at whatever you were attempting to do.
This is a fantastic compromise. You don't lose everything, but the intensity of the game is there. Waiting for the extraction, looking around and seeing these other players that may attack. It's pretty exciting at times.