And that's kind of my point that leads to the next question, if heaven is still about learning, overcoming struggle, and enjoying achievements and accomplishments, then how it is different from what we already have? The way I see it, heaven was dreamed up by people who had WAY more difficult lives than we have now (and there are some people who still have those difficult lives), full of disease, loss, death, and very hard dawn-to-dusk labor with no chance of ever getting out of it. So, they invented an idea that maybe, after all this hard work that they can't see any escape from, they will have some nice reward after they die. Problem is, many of us in the present already have nice rewards, means of changing our lives and work if we want to, and are often happy and generally satisfied with our lives, so heaven may seem unnecessary even.
Out of curiosity, what is your opinion on the concept of technological singularity, which is a point at which our computers are able to think and process as quickly and efficiently as our own human brains, and the point at which we can create artificial intelligence as real as us (with thoughts, feelings, wants, dreams, etc), and when we can upload our own consciousness into the machines, this making us effectively immortal, and being able to learn, remember, and think way more than we can now, as well as feel much closer to others by being able to directly share their thoughts and experiences? This is an idea that people believe we will achieve within this century.