The marketing of the afterlife and salvation was a later addition, a handy sales item with absolutely no product liability. It was never a big issue within Judaism. And there are so many other issue, particularly with the Gospel of John were alleged sayings of Jesus are interspersed with editorial comments of the unknown author without any indications of where the alleged quote ends and the editorial comments begin.
The biggest issue for me though is the blatant and misleading quote mining practice of the vast majority of the Fundamental Evangelical Christian communion and the fact that very many if not most Christians simply do not read what is written in context and instead fall into simply believing the interpretations and explanations marketed by the Carny Barker (AkA: Pastor, Priest, Father, Brother, Bishop ...).
Another big issue is the simple ignorance of the facts outlined in so many of the Old Testament threads. In many of the God warns of a disaster coming and offers solutions but it is up to the people to actually perform those solutions.
Examples: Big Flood Coming!!!!!! But humans need to build the boat and provision the boat and sail the boat and then replant and repopulate the world afterwards.
There will be Good Times followed by very Bad Times!!!!!!!!!!!!!! Humans need to plant crops and raise them and build granaries and set aside surplus and store it up and then distribute the surplus to those in need.
You will get to leave Egypt! But you will have to walk for years to get out and camp out and get up early to harvest the dew and send out hunting parties to catch wild birds if you want to live.
The folk that created Christianity, over a period of 100 years or more, crafted and revised the message to suit audience and era. Jesus was never a Christian and Never actually tried to create a new religion and Jesus was an Apocalyptic Believer; one who truly believed that the End was near and that the order was going to change violently. He may have also believed that afterwards some better live would happen but it was from the Jewish perspective rather than anything marketed by those creating a new religion.
But the basic message of Jesus, fed the hungry, clothe the naked, shelter the homeless, protect the weak, heal the sick, while not new and pretty much the echo of the Buddha, Confucius and other teachers in the past is still a great lesson. Christianity based on that short message could be awesome but that's also a near impossible sale to make. It's far easier to market You're Forgiven, Follow Me and the Reward will be Everlasting Joy.