Am i crazy for thinking humans are the biggest problem with our world?

i know not everyone is bad, but when i look out at the city i fill with loathing. our fascination with building has torn our once beautifull land apart. our buildings block the winds, so we use air conditioning. now that puts co2 into the air. please don't say i'm a hypocrite, because i live a relatively clean life and do my best to be green as much as possible. does anyone else feel this way?