If someone doesn't know how to be with themselves, then being accompanied can be very uncomfortable.
Lol, I was just writing about this in another comment on a different post. People who fear being alone, become very clingy partners.
This Sunday I had a shooting competition. It had been a long time since I had participated in a 25-meter event.
What calibre?
I couldn't agre more with that. And they "close" to the other/outside world, and even to be with different persons (including themself, has you mention).
.22LR
It a competition for small weapons, pistol or revolvers, with no anatomical grip, and with the trigger resistance of 1000gr.