JacksBratt, your post is stymied by 7 objections:
JacksBratt: "Firstly, we will not be in heaven for eternity. Eternity will be spent on a new earth."
(1) You are drawing a false distinction. You overlook the fact that the image of the New Jerusalem is clearly metaphoric. This imagery is based on various OT texts like Isaiah 54:11-17, which in Jesus' day is understood in purely allegorical terms (See e.g. the Dead Sea Scrolls commentary on Isaiah 54:11-17 [4 QPIs]). John's allegorical imagery should come as no surprise, given Paul's insistence that the future domain of the righteous is beyond the capabilities of the human imagination to express and describe (1 Corinthians 2:9). God is not one "item" in the New Jerusalem; rather, God is for John the eschatological reality that embraces all things and in 21:3 the descending city means God's dwelling with humanity.
(2) The image of the new earth includes the symbolic detail that it lacks a sea (22:1)--a symbolic observation, not a geographic descriptive. For John, "sea' symbolizes the forces of chaos (see 13:1; cp. 4:6), in contrast to our status as the water planet.
(3) Your misguided view of the new earth also overlooks the fact that "the wicked dead" lie outside the permanently open gates (22:15). "Outside" refers not to a place on the new earth, but to a spiritual realm for the evil dead. Thus, it attests the status of the new earth as a spiritual realm, not as a physical realm in our universe.
(4) "Paradise" which means "park" or "garden" is itself an earthlike realm and cannot be confidently distinguished from "the new earth." Yet Paradise is located in "the 3rd heaven." The new earth is not a remodeled old earth. That earth has passed away in John's vision (22:1). This fact raises the question of whether the new earth exists in our universe or in another spiritual dimension. The latter is the more plausible image for various reasons, including the fact that the old earth is mostly sea and the new earth lacks any "sea."
(5) More basically, you seem to misunderstand the meaning of Jesus' phrase, "the kingdom of heaven." Our ultimate abode is "the kingdom of heaven." In Aramaic" the word for kingdom means both "reign" and "realm." In that sense our future abode is the realm of heaven and hence heaven.
IacksBratt: The only way I can say for certain is that every day will be like a new day."
(6) On the contrary, "there will be no night there (21:25)" and therefore no days.
(7) Nor can John's vision of a new earth be clearly distinguished from his vision of a millennial reign (19:4-6), which lasts only 1,000 years (clearly a symbolic number), but not an eternity.