I chose other because the first to are both valid reasons why i used to solo play.
So for the possibility of griefer it is as you can imagine it or have heard in all the other posts. So all I’ve got to say is try solo play for yourself to understand the joys, pains, benefits, and annoyances of solo play.
As for saving time its true in some sense but it depends on the solo player how advanced they become. For example a solo player may advance to having a car and every resource and item in the game within 4 or 5 lives, mean while another solo player may only start making steel tools after 10 lives.
A third over looked reason is for players who prefer not to be a burden or feel like other players are looking down on them if they don’t know something so they become hermits avoiding the general populace. (This might lead them to keep playing solo after they’ve learned everything they can or wanted to due simply getting used to solo play)
And finally probably a part of almost all, if not all, of solo player reasons for not wanting to play with players they cant trust is not because they believe they are griefers or because those players dont know how to play the game. Its just they don’t want to lose what they have done.
What i mean is that a solo players camp, town, or server is like their bedroom. People spend days, months, or even years decorating their room and rearranging them. All it takes is one child ,little sibling or a parent meaning well to come through and everything’s suddenly different.
There’s now a hole in that wall, wheres my door! Why is there sheep poop on my floor O.o Didn’t i have a dresser there? Where did all my permanent clothes go?
Someone ate all of my burritos >.<