While we don't have hard numbers, reasonable estimates of these suborbital launches by environmentalists like [1], put them at around 10 to 20 metric tons of CO2 per passenger per launch. The average driver in the US generates about 5 metric tons CO2 per year in tailgate emissions.

Personally, I put far more value on giving people an unparalleled (and in some cases life changing) experience than a few years of commuting.

[1] https://www.treehugger.com/what-is-carbon-footprint-of-space...