If you emit CO2, you are hurting everyone else. If you participate in a web browser monoculture, you allow one company to own the web, therefore hurting everyone else. Please don't absolve yourself of the harm you are causing those of us that don't want to be under Google's thumb.
I exhale co2. Should I stop breathing? Should we stop using cars all together? Stop flying? Stop using computers?
Sorry but I don't operate in that absolutist way. Existence is not always fair, and it's not always without harm. Everyone has a footprint on their environment. Nobody is without one.