(SPOILER)Jenova is not Sephiroth's real mother.

Sephiroth is a crazed maniac, who thinks he knows what's goin on, but he really doesn't. This is why I think he's a great villain, and a "badass". He was cold, he was cool about everything (except for some points with his maniacal laugh), and had a super long sword. He took a giant f***ing snaked and hung it on a giant f***king tree, or whatever the hell that was.

Some people just disagree for the sake of "being different"... You all know he's badass and you all truly love him.