It would be a whole different history then what we have now. The things that were made as consquences for eating the fruit would not be there. The earth easier to farm, child labor easier, death not existing. Even farther though. Our hearts wouldn't have both good and evil motivations in them, with us struggling between the two. Likely we would be able to learn good with God, and He would not have tired of the human race's evil, sending a flood to the whole earth. Nor shortened our lives from nine hundred, to an average of eighty years. We would have probabley not built the city of Babble, with the tower of Babble being our quest for our achievements, and with that God might not have separated the languages.
Another few things is that in the beginning we didn't eat meat, nor did the animals. We would be eating the fruit of the earth and the animals would be eating the grasses and the leaves. Our whole concept of the world would be so different, I don't know if we can guess what it would be like. But history would have forked a different direction then it it did when we introduced evil into our hearts. I think it would have been better is we didn't eat the fruit. I mean how could it not be better then the world we have today, and the history of the world as it is till now?