I hold a similar position to you on this Fractal. On one hand I want to see balance with nature and us to recognise our place within it. On the other, what can be achieved with harbouring new technology is truely staggering, and I for one would like to see some of it achieved. The key is sustainability and responsibility. Both of which are massive challenges.
I do also think that we can limit ourselves by saying man made things or new technologies are "not natural", but how can we be not natural? We, and our ideas and technologies have risen out of a natural state. How can we be anything other than natural? I don't mean that destroying eco systems / pollution etc is not a bad thing, just that it is a part of the natural world as everything else is.
We wouldnt call an asteroid hitting the earth unnatural, despite its devastating effects. I guess the diffrence is that we have the ability to choose our future (to some degree). Technological development is a part of that IMO, I just hope we choose to develop in a way that maintains the beauty of this earth, and does not jeapordise the delicate and intricate systems within it.