You are imposing into the text something not there. When Scripture is dealing with "all" then it uses the word "all:"
Romans 3:19
King James Version (KJV)
19 Now we know that what things soever the law saith, it saith to them who are under the law: that every mouth may be stopped, and all the world may become guilty before God.
Here we have both "world" and a clear contextual reference to "all" people. This is what John 3:16 and 17 are referring to. The context there speaks of condemnation contrasted with salvation, and it is made clear in Scripture that God has given opportunity to "all" to be saved, in all Ages, through providing His will to man for that purpose (that they may obey His Will).
Consider:
2 Peter 3:9
King James Version (KJV)
9 The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
It is God's desire that all men be saved, but all will not be saved. Many will reject the Gift of God.
God bless.