Dodgy Questionnaires.

I recently volunteered to fill in a sociological questionnaire
with the typical 'tick the applicable box' questions.
Half-way through I was confronted with the question
Are you right-handed / left-handed / ambidextrous ?
I am none of these.  I am one of - possibly millions -
of people who were punished for being left-handed,
and, being right-handed in some tasks, left-handed in others,
can be defined as confused.
The stupid (and eminent and probably right-handed)
compiler of the questionnaire was evidently unaware
of this small - but important - demographic. 
I did not complete the questionnaire.  I wrote to its compiler
and received no reply. I conclude that the statistics
derived from box-ticking questionnaires are unreliable.