Actually, while in many ways the hippie times went on for another few years, many of them were getting a little older (mid to late 20's) were starting to have kids, etc. All were not going to become responsible Yuppies in a few years, but some would.
In some ways, what happened in August 1969 was signaling a change. Nixon was President, the %26quot;Silent Majority%26quot; conservatives, including some younger ones had spoken the November before. Armstrong and Aldrin landed on the moon less than a month before Woodstock. Many adults in the 'establishment' were starting to speak out against the war, not in the streets with demonstrations, but at the ballot box, Nixon had claimed a 'secret plan to end the war.' %26quot;HAIR%26quot; had become a big hit on Broadway. The counter culture was becoming more mainstream, so Woodstock was in a way the end of an era or the start of an end.Do you think woodstock changed America in any way?Not as much as the Hippies and the counter culture of the day want us to think.
Sure, it was a great party, lots of drugs, lots of sex, and something to talk about for the next 40 years. But, as a social change...not so much.