[timeninja]

Still, LEO is halfway to anywhere in the Solar System, so that's exciting.

[HPsquared]

Also you can assemble things in LEO from multiple launches. Once you're up there, you have a lot more freedom in terms of size and shape.

[dotancohen]

Halfway to anywhere, but the window to anywhere is quite small. For Mars, I think it's only a few weeks every two years or so. So having a lot of mass already halfway there when the window opens would be quite advantageous.