the human body will encounter complications in low and zero gravity
ftl will never happen
space stations are a scam that rich tech ceo's promise
mars cannot be terraformed
life is probably unexceptional and we will never make contact with others
you will all die on earth
Don't need a generation ship if you solve old age (or accelerate fast enough to relativistic speeds)
Also dismantling Venus would get a decent Ringworld/Dyson swarm going. The Asteroids alone could vastly outstrip Earth's area.