Getting to space is a relatively peaceful experience. It's the coming back down part that can be a bit more intense since 'aggressive atmospheric braking' is on

Getting to space is a relatively peaceful experience. It's the coming back down part that can be a bit more intense since 'aggressive atmospheric braking' is one of the most efficient forms of reentry. To put some numbers here the Space Shuttle only hit about 3g during exit. For comparison roller coasters can briefly hit around 6gs. Technology like SpaceX's BFR could potentially bring the g forces even lower. As its current design entails in orbit refueling, efficiency in launch is not all that important. The cost of fuel, relative to the costs involved in space flight, is negligible.