And yeah, I watched Sigmund regularly, probably mostly because everyone else did - it was popular. Comics were twenty cents a piece, you could ride your banana seat bike just about everywhere, and "Delta Dawn" and "Brother Louie" were on the AM radio all day, why not watch Sigmund? It was wild and vivid (I can't say colorful, we didn't have a color TV yet), and even though we weren't old enough to know about drugs yet, we knew the guys who came up with this stuff were a bit out of their heads.
The show had its flaws as well in the boys' absentee parents, the weird genie character Rip Taylor played in the last season, and Johnny Whittaker trying start a singing career. I guess he thought if the Patridges and the Bradys could do it, so could he. The show lasted three seasons then fell into the obscurity of syndication.
Sigmund lives on in the memories of those who watched however, my wife among them. The Bride is a huge Sid and Marty Krofft fan. We own all of their varied TV projects, on VHS, and DVD. I know hardcore. The popularity beyond the 1970s and Saturday morning are probably what spurred Amazon to produce a reboot. The first episode is available now, with more to come.