What justification do you have for hating the behavior of another person when that behavior has no effect on you, your family, or society? Before you say it, "perpetuating the behavior" or "making it seem acceptable" are not valid, since they're corollaries to the original argument. That is, you must specify why it's bad to perpetuate or accept the behavior before you can claim so.
For instance, I can say that murder is bad because it takes away from another his ability to live. I have actively affected the life of someone else.
So what does that leave? Because some god said so? Because you think you're entitled to not be grossed out by someone else's actions? And how do you justify enforcing either of those things in the context of a society that emphasizes freedom of religion and freedom of conscience?
I'm sure you'll dismiss this charge as "not what the overall organization is about", but before you do so, I encourage you to consider that a movement is no more than the sum of its parts, regardless of its stated objectives. There's a larger percentage than you're apparently comfortable with acknowledging who would gladly trade someone else's freedom for preservation of their own moral comfort and/or superiority.
This is nothing more than self-righteous fanaticism. Anyone working to perpetuate the organization without understanding that this is what it enables and produces is dangerously naive. That includes you.
Hell, even if they went themselves, they'd claim that it was mirrors dropped by previous unmanned trips. Or swamp gas. Or they never left Earth at all and were in some kind of simulator. Though I suppose there's an easy way to fix that last one: offer to open the airlock.
I agree with the assertion that you should never whine about "leaving where you've been all your life" because it's rooted in an unreasonable aversion to change. Yes, there's a lot involved, but it's not something that's never been done before.
However, going back to the oil problem, in some cases there is no fitting compensation other than uprooting your fishing business and moving to somewhere completely different - on an ocean instead of the gulf. Is BP going to pay for that expense? Or will they get out of it on the grounds that asking them to move you and your family and your entire business to a different, possibly more expensive area is "unreasonable"?
And how do we properly account for what might amount to irreparable damage to that particular source of food in the near- to mid-future?