Terraforming is big business in the future, is the long and short answer. Intergalactic expansion was necessary once we'd used up the majority of resources we were going to pull out of the Sol system, so we started looking elsewhere.
There's no such thing as a replaceable person Barnes. Expendable? Maybe, but that's not a call I choose to make. Losses are losses, even if you're both wearing primary colors in the field. I can't say much, blue and white were my armor colors too --Modeled it after Cap, as a matter of factand Lord knows I got myself shot to just about every kind of hell there is.