It is certainly a valid opinion
. However, I would much more like to leave on a green-house Earth, with warm weather, almost no seasons and a
really hot ocean (up to 40°C).
Also, the humanity is currently in a bad place because we're just in a warm interlude between two huge glacial ages. We don't know how much that interlude is gonna last (estimates vary from 15 to 50 thousand years), but once it's over, it's ice all over again. And unless humanity can prevent it, the civilization will be at least badly shaken by it.