I don't really follow this logic on two accounts. First is that when you remove yourself from the gene pool what you're effectively doing is simply ensuring that a larger percent of the children of the next generation come from families whose values you'd probably find quite distasteful. And their children will also end up holding those values at a high rate. This means that in the future 'your' values will have less influence and 'their' values will have more. This effect is going to be much greater than any sort of resource consumption reduction on what happens to the planet in the future.

The second is that the status quo on Earth is never sustainable. For but one example among many on this note, Earth has gone through multiple mass extinctions - long before humans arrived on the scene - and it will continue to do so; in fact we're rather overdue for one. So the idea of living in perpetual harmony with the planet sounds like a nice goal, but is itself also a fairy tale. This certainly isn't an argument to just YOLO away the Earth, but rather that doing things that are relatively self destructive for the sake of trying to achieve a perpetual harmony is unwise, because that goal is impossible to achieve.