Halivar said:
I only wish Harmony Gold wouldn't have tried to mesh Macross, Southern Cross, and Moespaeda (sp?) into one show. I especially hated the end of season two, where verything was just "and the world blew up again, everyone you cared about for the last season died, and now we start over." It was too depressing. Taken individually, the three seasons were fun to watch (again, voice acting aside).
As Rackhir pointed out, you have to take Robotech in context. Back in 1984, it blew a lot of folks right out of the water. Up until the late 90s, anime was still a secret subculture. Every few years, a show would cross over into the mainstream, and usually end up attracting a new generation of anime enthusiasts.
Even edited, rewritten and oddly reworked at times, Robotech still stands as a pretty impressive series.
As for the combining of the series, that was a necessity born out of U.S. syndication policy. Originally, Harmony Gold bought the rights to Macross and was planning on distributing it primarily on video. I still have an issue of Heavy Metal in my collection somewhere with an add for the first 90 minute video (which was episodes 1-3 edited together). Before Hikaru Ichijo was Rick Hunter, he was Rick Yamada, first, in the pre-Robotech Macross adaption.
However, Macross proved somewhat popular, and they decided that they'd shoot for a syndicated TV series to resell, since that was Harmony Gold's main business. Consequently, Macek got two other similar series. Why? Because Macross only runs 36 episodes, and U.S. syndication buyers only were interested (at that time) in shows that had at least 65 episodes. That's the same reason for previous shows like Voltron being comprised of three different shows or the five giant robot shows being combined.
To an anime fan of the early 80s, we're living in Anime Babylon, as my friend Scorch puts it. Shows like Yu-YU Hakusho, FLCL and Wolf's Rain on US television? Well dubbed, and using the character's actual names? Shows being made available in the US mere months after they are released in Japan, in some cases? Conventions dedicates purely to anime?
Pardon me while I gush.

Luckily, Otakon is only a few weeks away.