If folks want, I'll split this discussion out into another thread.
Anyway, here's what Genesis says in the Japanese script about returning to the Lifestream:
みんな 星に帰るのさ
It's basically just "Everyone returns to the Planet" or "Everyone will return to the Planet," but the way he pauses after he says みんな ("everyone") came off as threatening to me. It's as though he's addressing "everyone" in that line, not Zack. That sort of pause is used a lot when addressing someone.
It makes me take the line as "Everyone, let's return to the Planet." Others may interpret it differently, though.
In either case, I think it goes right along with what he says on multiple occasions:
(right before the fight with Genesis in Modeoheim)
Hollander: "But...nobody knows where the Jenova cells are being kept!
Not even Hojo knows. You'll never find it!"
Genesis: "Then I shall willingly accept my fate.
But, I'll take the world with me!"
(right after the fight with Genesis in Modeoheim)
"If this world seeks my destruction...
...it goes with me."
And, as Shademp posted, he continues saying "I'll take the world with me!" even during the final battle with him when he uses Apocalypse. And this is immediately after that "Everyone, let's return to the Planet" thing.
Yeah, I'm going to go with he wanted to kill everybody.
And his killcount is not the same as being a worldending calamity. A few hundred SOLDIERs? How many Shinra troops have Cloud and Avalanche killed?
A world-ending calamity that didn't end anything, you mean.
Genesis's murder count stands higher until Sephiroth begins infecting people with geostigma.
As for the point about Cloud and co. killing Shin-Ra troops, I thought we were discussing murder here. Most -- if not all -- of their Shin-Ra kills are justifiable to some degree.
His worst crime is to convert Soldiers into his clones, that's pretty evil in itself but I doubt he could forcefully convert them all, I think it's plausible they volunteered to get Genesis' power.
They certainly wouldn't have volunteered if they knew they would become mindless, deteriorating slaves.
He took their autonomy and gave their zombified remains a death sentence.
Well I also got the impression that Banora people are Shinra employees, still wrong to kill them though.
It started out that way, but became autonomous before Genesis and Angeal were even born. The only people in the village who even knew of their connection to Shin-Ra were Genesis's parents, Gillian, and the town trustees.