George McGovern was hard not to like, but his politics were naive in the extreme. Late in life, he decided to go into business, and wrote about it: George McGovern in the Journal - A Politician's Dream Is a Businessman's Nightmare: A 1992 column on the realities of running a business.
I think it must have been painful for him to accept that many of the Liberal policies he had stood for during his career were plain destructive and exasperating to the ordinary citizen who just wanted to make an honest living.