Christian churches do not have any statues for the reason you stated, Catholic churches have many.
If you don't think catholics are christians, I'm filing you in the dingbat bin, and ignoring you. Protestant churches behaved just as disgustingly toward jews and catholics did, if not worse, while offering up the exact same excuses as the Catholics. Martin Luther was a famously vile jewhater. I don't really care why reform churches have statues of Jesus. God said "no other God's before me, for I am a jealous God", yet I see only Jesus statues in God's church.