Why did the opposition after the Vietnam War affect President Johnson?

President Johnson did NOT like the Vietnam War; He didn't like to talk about it, he didn't want to hear about it, and he didn't want "...to send American Boys to fight a war that Asian Boys should be fighting..." to quote one of his televised broadcasts. Johnson wanted to concentrate on HOME MATTERS; primarily his "Great Society." Vietnam angered him so much, he refused to remain President of the United States after his first term expired.