Like, Mars gets all the hype, but you're dealing with bone-dry cold, no atmosphere to speak of, and brutal radiation. Meanwhile, Venus has breathable pressure, decent gravity, and no need for pressurized suits... you just have to float above an acid bath.
I think part of it is that everyone knows that the sun will expand. Why move closer when you can get further away?
It'll be a minute before that becomes a concern.
Also, if we can deal with Venus, we can reverse global warming in Earth first?