> Strange implies a negative value judgement
It sounds like you've internalized some negativity around being "not-normal" -- how I would define "strange".
In a society of vice, greed, and perfidy, acting nice for no reason is "strange".
So, as many things that can be compared and have a "normal" can be strange.
Deviant implies negativity, but I would say pacifists are "deviants".
Any negativity with "strange" has to come with context.