[worldsayshi]

I don't understand this logic. How does one action with unfortunate side effects excuse another?

Sure perhaps we shouldn't be using the internet. Or perhaps we should do a lot more to make sure that the energy used for powering the internet is sustainable.

But our deficiency in that area doesn't make this activity any better.

[ThomPete]

Who are you to decide what is ok and what is not? How do you know that building a supersonic jet doesent open up for other technologies or methods that wil improve effectiveness of fuel consumtion? I dont understand with what logic you get to decide that your consumption is ok but other peoples use isnt.