The controversial issues about Wind Energy: Should it be a source of electricity production?

Wind power has become increasingly popular because it burns no fossil fuels and produces electricity without emitting no green house gasses into the air. However, questions about it remains and many people doubt about the possibility of using wind power to combat the global warming. Even though I'm supporting wind power, I constantly question about it.

Before going on, to find out more about wind power, you can read about Wind Power in Wikipedia
Here are the most two popular questions about wind power. I will provide my pros and cons ideas for comparison.

Is Wind Energy economical ?

Pros Wind power require no water. Unlike other forms of energy generation, wind turbines use no water for cooling or as a medium for transferring the heat energy into an usable one. Wind is abundant, and can supply a massive amount of power. There is more wind in the Earth that we could ever need for electrical production. Wind power will help us hedge against the volatile of traditional fossil fuels, thus, increase our energy security. Wind power creates new jobs. The rising cost of fossil fuels makes wind power more competitive

Cons Wind projects require a huge amount of capital investment because the installation of wind turbines are expensive. The output can be inconsistent because there can't be wind all the time. That makes it less dependable than other polluting energy source. Wind energy is far from the demand area. To capture the best winds, on-shore wind farms are constructed far from the city or coastal areas where  the demand for electricity is the highest.

Is wind power consistent with electrical grids?

Pros All the power generations need backup, not just wind power because no generation method is 100% reliable.  We can use energy storage batteries or combine other types of renewable energy such as: solar and bio-mass

Cons Wind projects can strain the electricity grids which are not designed for many disparate wind farms