To your point, one of the most remarkable things I've read about both Mars and Venus, is that there was a time billions of years ago when they had more moderate temperatures and liquid water.
In a way, it's a tragedy that human civilization has only emerged at a time when both Mars and Venus have become much more uninhabitable than they used to be.
In a way, it's a tragedy that human civilization has only emerged at a time when both Mars and Venus have become much more uninhabitable than they used to be.