I can asure you that my "self" interest would be far better served by no new runways anywhere in the UK, as for the interests of my children and grand-children however that may be a different story, as yet largely unwritten. On this topic I am prepared to subjugate my self interest for that of the Country I hold in highest regard.
Regarding your closing remark I am sure my parents will be mortified but fortunately they don't take themselves too seriously either.