That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked at and our hands have touched—this we proclaim concerning the Word of life. 1 John 1:1
We do not have the privilege that the authors of the New Testament (except Paul, to my knowledge) had, to see Jesus with our eyes and touched him with our hands (or hug his neck as I would like). If we did, would our testimony be stronger?
Jesus told his disciples that he had to leave them, but the Counselor would come. We know the Counselor is the Holy Spirit of God who would dwell within all Christians who welcomed him. And because of the Holy Spirit in us we are full of God (though our sin nature is at war against it).
And here is the "Good Thought": We will get the opportunity to see and touch Jesus one day, but until then He is dwelling within us (John 14:20). The testimony we have for those lost in sin should be as strong as those who witnessed Jesus' life firsthand. Also, if you think of it, we are a witness to Jesus' life, if we are witnessing the life of a Christian fully walking in the Holy Spirit, just as Jesus did.