Because it is a very sub-par anime . Lacks so much character development
Story is trash and I mean TRASH , all the colors are fucking annoying I hated the design of the characters and I love CLAMP , its like a huge Death Note/ Gundam Seed clusterfuck
Show has a lack of focus.. Fails to stay on track .
Lelouch is overrated and a very poorly thought out character .
Too much lame fanservice , fanservice is only good to an extent ..
and lets not forget the fanbase, a bunch of idiots who fail to realise the flaws in this anime .
and to quote someone else "-If Lelouch really wanted to overthrow Britannia, he could've used his Geass to have people assassinate the VIPs of Britannia, thus throwing the empire into disarray. He is not pragmatic like, say, Light Yagami. As such, I find his brilliance grossly exaggerated."
AND HIS PERSONALITY IS A RIPOFF OF CHAR AZNABLE ARE YOU KIDDING ME???????????????? And hes only 1/3rd as good as Char -sigh-
This is on par with Guilty Crown as far as annoyances goes .