In what way, exactly, would God have to speak to you so that you would recognize it as Him speaking? Something like what you do; english in an audible voice.
And if He did speak to you this way, would you drop to your knees in grateful submission to Him, yielding the rest of your life to whatever He wished? Would you set aside every aspiration, every goal, to wait upon Him? This is what seeing
God your Maker face-to-face would require. But unlike those of us who come to God through faith in, and love for, Him, a personal appearance and speech from God of the sort you seem to want would remove any
choice you might have had to serve and obey Him.
You know, God did more than just speak in an understandable, audible language to people. According to the Bible, he took on human form in the person of Christ and lived among His creatures for some thirty-odd years. In spite of all the miracles that He did, His resurrection from the grave, and the powerful impact He has had on cultures all over the globe, all that has been required for people like you to dismiss these things entirely has been the passage of time.
The Bible tell us that God speaks to all of His creatures through what He has made. The existence of the universe proclaims loudly that God is; the beauty, complexity, order, balance and creativity evident in the universe speak of God's character; the power and vastness of space, the billions of galaxies each containing millions of planets and stars - all speak to God's omnipotence and transcendence. And it is because this is so that the Bible says,
Romans 1:18-20
18 For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who suppress the truth in unrighteousness,
19 because what may be known of God is manifest in them, for God has shown it to them.
20 For since the creation of the world His invisible attributes are clearly seen, being understood by the things that are made, even His eternal power and Godhead, so that they are without excuse,
Do you doubt the existence of Napolean, or Shakespeare, or Alexander the Great? How about Einstein, or Hitler, or Babe Ruth? None of these people have spoken to you in person.
What proof do you have that the Bible is as you describe: "a bunch of men claiming to speak for God without providing any proof." What proof do you think they should have provided?
a voice that I recognize as God's saying; "this man speaks for me"
Why would you be satisfied to listen to a man speak for God when God Himself has spoken to you? I mean, if He has spoken once, why not again, and again, and again?
Why isn't the fact that other men have been convinced that the Bible is the Word of God not been the least convincing to you? Many of these men were at one time just as skeptical as you. Did they have a change of mind because they were all just not as smart, or careful, or as skeptical as you?
Selah.