reefer - i think the debate needs to be wary of use of words like 'normal' and 'natural'.
In its dictionary definition, the word 'normal' refers to 'the norm' as in the majority, so strictly, it is appropriate use of the term.
However, we should be mindful of the wider use of the term, which infers that 'normal' is the correct, and therefore anything that does not conform is 'abnormal'.
It is appropriate therefore to take care when using terms like 'normal' and 'natural' when referring to a specific strata of society - because no-one is comfortable with having aspects of themselves seen as 'abnormal', or 'unatural', which rightly leads to anxiety and defensiveness.
I am bald and short-sighted, therefore, statistically, I do not conform fo 'the norm', but I would not wish to be referred to as 'abnormal' for these traits about which I have no choice.
A little thought about the perceptions and feelings of others on the thread will certainly help to avoid side-tracking and unpleasant exchanges.