I used to think the same way, but...everything has to agree with all scripture and not just a particular passage. Other verses say stuff like...
on earth as it is in Heaven...the pure in heart shall see God...and...
I will manifest myself to him...
So there's other passages too besides those which indicate that some will see God while here on earth. I have heard quite a few testimonies over the years from people who say they got to visit (the third Heaven or wherever) and saw The Father sitting on His throne...and they lived to come back and give testimony to the same. They all can't be lying! So I meditated on this a bit and opened my heart to be able to receive truth. One thing has become clear to me...you have to be able to see Jesus before you will be able to see the Father.
I think that passage which says no one can see the Father and live...is talking about the spiritual death of the flesh and not the biological body. Didn't Christ say that the Father and He, are one? He is in the Father and the Father is in Him? Yes.
Jesus even admonished Phillip about this in John 14:7-9
7 “If you had known Me, you would have known My Father also; and from now on you know Him and have seen Him.”
8 Philip said to Him, “Lord, show us the Father, and it is sufficient for us.”
9 Jesus said to him, “Have I been with you so long, and yet you have not known Me, Philip? He who has seen Me has seen the Father; so how can you say, ‘Show us the Father’?.../
Now, I have never seen Jesus or the Father (yet). (My heart is not yet pure?)
But amidst all the commandments and stuff we see how to have a pure heart. (walk in Love towards your neighbor...bless those who curse you and wrong you...) and this is it!
Being unable to, walk the walk, alone...we entreat the Holy Spirit to lead us. He will lead you to be able to see Jesus in the face of your enemies...!!!
I am at present unable to do this so far. It's hard with so many hard hearted people around who seem to take pleasure in "gotcha"...