Parasites implies that they have no positive function Thats simply not true. 1)On a purely monetry level pound for pound the monarchy provides more into the countries coffers than it takes out(and not just tourism and the invisble earnings aspect). 2) Continuity of goverment- the Queen briefing role of succesive prime ministers.3) Constitional role as I've already mentioned. 4) Diplomatic Role. Cllr