Solar makes sense, so why the hesitation?

Lots of companies are now producing solar technology that is very affordable for every day consumers. Photovoltaics have come a long way since their creation, and are now more efficient then ever. They are increasingly more accessible at major retailers, and some companies will even come to your house and install them for free. So why doesn't everyone have one of these on their roof?

There is no question that having solar installed in your home is a smart thing to do. It is saves you money on your energy bill, and its better for the environment because it makes use of a renewable resource. Some provinces and states in North America even allow you to sell the additional capacity created by solar panels back to the utility and make money from solar. From a business perspective, it can even make your company more desirable to work at. Google installed solar this year and estimates that the investment will pay off for itself from the new talent it attracts alone!

Is there just a lack of awareness about the benefits of using solar? What are the major barriers to getting everyone to change their existing behaviour and make the change. Personally, I think it's a no brainer.