HOW DO I STOP OUTLOOK FROM STRINGING TOGETHER ALL PREVIOUS EMAILS.

When I send an email and someone answers, it's attached to my original.  Then after that, every reply back and forth is strung together .  The person I send it to sees the whole email string.  THEY DON'T WANT TO SEE THAT AND NEITHER DO I.  HOW DARE OUTLOOK ASSUME THAT I WANT TO KEEP ALL EMAILS ON A SUBJECT ATTACHED. HOW DO I TURN OFF THAT FEATURE . IT IS DEVASTATING. NOW I'M AFRAID TO REPLY OR FORWARD BECAUSE EVERYONE IS GOING TO SEE HISTORY THAT THEY DIDN'T ASK FOR AND DON'T WANT!