Are you kidding? It’s expected to replace the Falcon Heavy for LEO launches and further bring down the $/kg for launches. To say it only makes sense for Mars go

Are you kidding? It’s expected to replace the Falcon Heavy for LEO launches and further bring down the $/kg for launches. To say it only makes sense for Mars goes against both common sense, and SpaceX’s own claims. From Wikipedia: BFR is planned to execute five diverse flight use cases:[75][5] legacy Earth-orbit satellite delivery market long-duration spaceflights in the cislunar region Mars transportation, both as cargo ships as well as passenger-carrying transport long-duration flights to the outer planets, for cargo and astronauts[76] commercial passenger travel on Earth, competing with long-range aircraft[77] Musk and Shotwell have touted the ability of BFR to carry passengers on suborbital flights between any two points on Earth in under one hour.[62][78] Launching sattelites and ferrying people are things they can actually do alone, while the rest is very much a pipe dream requiring massive hpthird party investment. Again, putting aside “stuff Musk says” you’re left with strong commercial applications for BFR that have nothing to do with Mars. While it could be used for Mars, SpaceX has no plans to make that happen and acknowledged the vast amount of third party effort required. See: In July 2017, Musk indicated that the architecture had "evolved quite a bit" since the 2016 articulation of the Mars architecture. A key driver of the updated architecture was to be making the system useful for substantial Earth-orbit and cislunar launches so that the system might pay for itself, in part, through economic spaceflight activities in the near-Earth space zone.[49] BFR is planned to execute five diverse flight use cases:[75][5] legacy Earth-orbit satellite delivery market long-duration spaceflights in the cislunar region Mars transportation, both as cargo ships as well as passenger-carrying transport long-duration flights to the outer planets, for cargo and astronauts[76] commercial passenger travel on Earth, competing with long-range aircraft[77] Musk and Shotwell have touted the ability of BFR to carry passengers on suborbital flights between any two points on Earth in under one hour.[62][78] Finally SpaceX have indicated that they only intend to create the transport system to Mars, and that other aspects of colonization (habitats, mining, etc.) will need to be contributed by third parties.[28] A successful colonization would ultimately involve many more economic actors—whether individuals, companies, or governments—to facilitate the growth of the human presence on Mars over many decades.[29][30][31][5][32] Work contributed by others will allow colonization to progress far beyond what SpaceX projects to build alone.[24]