Omg people its - the bullshit mascaraing as science these days is exhausting. Earth is on a hot house trajectory regardless of climate. The sun expands and gets hotter - so do we. Its literally then simplest game structure there is - get to the next hop before you die. The next hop is Mars. I don’t understand why this isn’t inherently obvious.

The sun expands and gets hotter

Yes, in approx 4 billion years.

I agree that is a concern but I think we should also pay some attention to some of the problems we will be facing in a timescale somewhat shorter than billions of years.