Well I am shocked that I have stirred up so much discussion.
But I think that it is equally possible to have a polite and reasonable discussion of philosophy, politics, or religion as it is to have a discussion about anything else. Equally I think it is possible for people to get nasty with a discussion of any topic, some topics however do attract trolls and also raise people's anger. While other topics do not normaly provoke strong feelings.
For example I have never heard of an angry debate about pi for example.
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Health is a state of physical, mental and social wellbeing and not merely the absence of disease or infirmity

I am not a jigsaw, I am a free man !
Diagnosed under the DSM5 rules with autism spectrum disorder, under DSM4 psychologist said would have been AS (299.80) but I suspect that I am somewhere between 299.80 and 299.00 (Autism) under DSM4.