[Spaceships] getting into orbit without superscience?

[DemiBenson]

I know I already responded, but let me put it in a different way:
Without super science or magic, getting to orbit from an Earth-sized planet is incredibly expensive and requires a truly staggering amount of infrastructure.

If you want a future society to have regular space travel, your options are

• Super-science, of some flavor and some degree of reality-bending
• A truly stunning amount of rocket launches world-wide
• Established space-plane technology and all the infrastructure to support it
• A non-rocket launch method, which requires far more upfront infrastructure and political will, but will ultimately result in a much low per-ton launch cost, which would be passed-on to the end-consumer

Each of these has follow-on implications for the setting you’re working up.