You really have me puzzled now.
If Christ was God, why did He die if not for the express purpose stated by Him? And why was He here in the first place?
What sense does it make to accept Christ as God but deny everything else about Him?
Logically, it doesn't make sense to me either, but we don't think as God does. It doesn't make sense to me that the universe goes on forever either, but I still know it does.
Why did he say he was here?
What sense does it make to accept Christ as God but deny everything else about Him?
A very good question, but you ask it of the wrong person here. If you ask why I deny everything else others have taught about Jesus I might answer.