How is it a religious opinion that games should be beatable? Unless you're the computer in War Games and need a philosophical lesson on why nuclear war is bad. Difficult, sure, make the game as hard as you like so long as it is actually winnable. Game design is actually the art of inconveniencing a person in a specific way. No one enjoys a game state that is actually unwinnable, unless you think people enjoy bugs that simply stop a game from functioning. Because they have the same effect as poor design. Your anecdotal experience not withstanding, it was an issue that a lot of people experienced.
Again, except for the still questionable multiplayer, all these issues were fixed in Cataclysm while retaining everything good about Homeworld's controls and mechanics.