I think there is no reason that bitcoin becomes bad to the environment. As a matter of fact it helps a lot of people in the invirinment to grow their knowledge and to improve their social life. It also helps to the unemployed people which can be a good job for them.
You are writing this question, but till now not so much people know about Bitcoin, and they don't have the opportunity to work with it. But technologies make profit to people to hear about Bitcoin and invest in it.