Every time, this discussion comes up , anywhere, you have these three general groups against it, 1) the we need to get our world and society in order before we go out and colonize other planets, 2) The physics will not allow for it or that it will never be economically viable to do so. 3) The Human race is doomed anyway just enjoy the ride while we are here.
I disagree with all of these, the simple fact in is that regardless of what obstacles are in our way, we must as a species over come them and colonize other planets and eventually other solar systems or we will DIE!! All of us, as a species will die. That is the reality that is the truth of it.
So, we will never get all our social issues perfect, probably never be a utopian society, the physics problem, we must overcome or work around, quantum theory is trying right now. The physical barrier can be overcome, with time effort and properly allocated resources. As far as “we are a doomed species” stance, well if there were more people like them, we would be.
God will not will not save us, we must save ourselves..