You can have multiplayer influenced worlds and environments, enjoy seeing what others do and create in that world, without enjoying the partying up aspect. MMOs with competitive markets, faction influencing, or competing with players in general rather than direct conflicts.
One can enjoy the world building of MMOs without wanting to be a part of a guild or raid parties.
I am all for basic first aid to be part of school curriculum. CPR, AED, and Stop the Bleed.
There are so many reasons to have a stop the bleed kit and training that isn’t gun shot related. Industrial accidents, automobile accidents, and even accidents around the home like kitchen accidents could cause a serious bleed. It’s not a terrible thing to understand the basics of preventing someone from bleeding out.