Why Must Jesus Virgin

I believe in Jesus Christ is virgin.
Because Da Vinci,Michelangelo,and Raphel were all living  in virginism life.

However,why for centuries ,people argued about ,if Jesus was virgin?
Why the Gods in legen ,like Zuses ,could have sons and daughters ,but Jesus couldn't?

Because,if Jesus was God,He must be better than Adam and Eva,the forbidden fruit ,which makes women pregnant for man ,wasn't Jesus' test!

Or,He couldn't qualify God's only Son!