Why can't there be more Earth you ask...
On earth, there's lots of bad mixed with good, with food comes hunger, with love comes loss. . . what do you enjoy on earth? It's the feeling of wholeness and contentment. It's not the food, the sex, the sun, the rain, it's the
feeling. In the afterlife (non-Christian perspective here) you'll either keep reincarnating or reach a state of spirituality that your soul merges with the One (sometimes called nirvana). In that state, you'll be fulfilled because all your desires are met by having the feeling of fullness and contentment.
When we desire earthly things, we're not concentrating on wishing to be fulfilled by God's grace, instead we're showing attachment to
maya. When we wish for things other than God, we're being distracted from the quest to eventually merge completely with the One.
Once we realize that it's not the activities, physical pleasures, and personal company that we enjoy about Earth, but rather the feeling of contentment/God's presence, you'll realize that the afterlife has all the pleasurable feelings you desire plus more.