"Christ performed miracles to fulfill prophecy and prove that He was Deity...not to meet felt needs."
Then why did He ask the blind man "What can I do for you?"
And which specific passage are you referring to when you quote the blind man?
Why did God ask Adam 'where are you?' and 'what have you done?' is it because he didn't know?
I would also ask you to see how he responded to the answer to that same question to his disciples in v 36 of the same chapter. (Mark 10 btw)
in contrast, look at blind bartimaeus, pleading for mercy. He knew his helplessness. And Jesus saw his faith. The helpless blind man fought the crowds to get to him, because he knew only Jesus had the answer. That's far different from going with the crowd to be filled, as happened in John 6. Jesus did these things as signs, and then he rebuked (ch 6 v 26 & following) those who came for those things, and not for him, the true fulfillment of their REAL needs.
If Rick got up and said "you shouldnt' be coming here because of the catchy music, or the coffe, or even the fellowship. You should be coming here because of Jesus. Let me show you in more and more detail the truth about who Jesus is, because frankly, to your natural mind, he is offensive, just as Scripture says. He is a stumbling block. You must leave all your fleshly desires behind, and turn to him alone. You have nothing worthwhile to give him." But he does not.