B-757-200 CREW WAS ADVISED OF A TWR RPTED MICROBURST ON THE RWY DEP END; AND ON THE LNDG RWY. THE CREW IGNORED THE WARNINGS AND CONTINUED THE APCH TO LNDG.

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WHILE MAKING APCH TO RWY 36R AT CLT; WE WERE ADVISED OF TSTM N TO E OF ARPT. ACFT IN FRONT OF US RPTED NO WINDSHEAR; SO WE CONTINUED OUR APCH. AFTER PASSING FAF; TWR RPTED MICROBURST ON DEP END OF RWY 36L; FOLLOWED BY MICROBURST ACTIVITY ON RWY 36R. WITH THE RWY IN SIGHT; AND WITH THE ACFT IN A POS TO LAND; WE CONTINUED OUR APCH AND MADE A NORMAL LNDG; WITH NO SIGNS OF WINDSHEAR. AFTER REVIEWING THE EVENTS; I REALIZED THAT WITHOUT A DOUBT; A GAR SHOULD HAVE BEEN EXECUTED AFTER RECEIVING RPTS OF A MICROBURST. IF THE CAPT WAS INDECISIVE; I SHOULD HAVE MADE THE DECISION; BUT OTHER FACTORS PREVENTED ME FROM IMMEDIATELY MAKING IT. WITH CONVECTIVE WX TO THE N AND E; THE ONLY DIRECTION WE COULD HAVE GONE WOULD HAVE BEEN TO THE W WHICH WOULD HAVE TAKEN US INTO THE PATH OF TFC ARRIVING AND DEPARTING RWY 36L. AT THAT POINT; LATE INTO THE APCH; IT SEEMED LIKE THE BEST ACTION WAS TO LAND THE ACFT ON RWY 36R. OTHER FACTORS THAT HAD A BEARING ON MY DECISION: LAST LEG OF A 4 DAY TRIP; 14 HR DUTY DAY. I HAVE VOWED NOT TO PUT MYSELF INTO THAT POS AGAIN!