diversity of s,w

i have been thinking about this a while on some similar worlds members . i have been on similar worlds from the start and spend a lot of time on this site something just occurred to me recently about some of our members.how one particular american group mainly seem too come on similar worlds and never ever rarely answer any questions outside political ones .do they just like the cut and thrust of the topic the debate and disagreement it brings and an excuse to be nasty.it appears a mind set with them it may be a case they have no interest in the rest of the question and topics of this site or cannot broaden the horizons beyond this