Um....how is Virgin Galactic close to Luna if they haven't even finished testing the prototype for SpaceShipTwo? (Which isn't even their first orbital ship so they haven't even got near perfecting orbital flight.)
As for why I'm not keen on the idea of working for private companies: one word.
Profit.
I refuse to allow profit to be the goal of what is supposed to be the next step in human exploration. Our history shows what happens when profit is the goal, and the results aren't pretty. I seek to open the solar system to humanity for vastly different reasons, ones that benefit the entire planet without risk of someone lining their pockets from our efforts. And let me explain what I mean:
In space we learn how to live in close quarters and limited resources. This produces new methods of food production and storage, such as hydroponics and freeze-drying. New construction methods are devised, modified, and/or refined, such as modular designs. Space also teaches us how to adapt to entirely new and different environments, ones that are radically different than the ones we evolved in.
And these I believe are the most important reasons for space:
1. It promotes cooperation between people and cultures. Space is harsh and unforgiving. It doesn't care what language you speak, what color your skin is, or what organs you have. If you can't work together as a unified crew and something happens, everyone dies.
2. Space has been the subject of dreams for as long as we've been around as a species. Now we can reach out and touch those dreams, turning them into reality. Space is the ultimate in human achievement. Going to Luna has shown that we can do anything, and there is a lot more to do. Mars draws us like a lighthouse, and there is much more to explore and to experience.
Do I believe that we should take care of Earth and our fellow creatures? Of course I do. I admit, it's probably my fault that it looks like I want to put space ahead of everything, I tend to not be as clear as I want to be. Space is a way to help take care of ourselves. As I pointed out above, space gives tools that we can use, and it provides common goals that we can all work towards together. They are goals that I wish to help accomplish, but not in a way that allows a small group of people to leave a larger group in the dirt.