Of such paramount importance does the manglik dosh become that all your other important personality traits like character, education, morals & beliefs take a back seat. The day its out in public knowledge that you are a manglik, people would shun you as if you have caught swine flu.:-) Believe me for a young person of marriageable age in India there is no worse malaise than being a manglik.
Strangely the deleterious effect of mangal is only to fell upon the spouse and not on your blood relations like your parents & siblings and even your friends.
I am sure if there is any intelligent form of life on Mars, they would be equally wary of the effect planet earth has on them and they would have a name to this, guess what, pritwik dosh. ;-)
As you would have observed, i find all this very amusing and humorous and would not care a damn about the manglik dosh, the business of horoscope or the pseudosciences of numerology, astrology etc as they stand on no scientific ground or the test of reason. And I am sure that it would be so with the majority as time passes by. :-)