I don't think it would even get as far as thinking about the "thousands of years" bit. $WE would just think, "OK, we survived, but our neighbors were already weaker than us before, so they're bound to be in really bad shape.".

(I have a pessimistic view of humanity. Individual humans are actually usually pretty nice, but we're just too easily led and since 'leaders' tend to have traits that are antithetical to general well-being...)