The problem is, if we don't do it, someone else will.
That's a really stupid excuse to do stuff. Yes, if you don't jump off a cliff now, someone else may eventually do so. But if you don't do it now, it means it's more likely to happen later than earlier. And that buys the rest of us some time. There have been inventions and discoveries that were lost and took a long time to be reinvented/rediscovered again - so it's not like the "someone else will" is necessarily soon.
As for who is this "we", it's everyone. The more people who start thinking about whether it is really a good idea to do something from a long term and "big picture" perspective, the more likely things will be better for us. And that's why I posted about it.