How and why should get a some form of protection for your invention idea

http://www.inventions-handbook.com/easy-invention-ideas.html
How and why should get a some form of protection for your invention idea
A patent is a lawful protection given to the operator of an invention for making his invention idea general public. Patents for inventions were born to encourage inventors to share their new, innovative ideas with the world. The incentive for making your creative idea general public: exclusive rights to prevent others from using your patent invention idea, selling it, making it or importing it for the period of the patent. To better understand why patents for inventions where created, let’s look at the following example:
Assume you came up with a new invention, let’s say, a cool transparent toaster. You do not patent the invention and happily produce it and start selling it in your shop. The day after you do so, your neighbor realizes that there is a huge market for these transparent toasters, and he goes on to copy your product and sell it to anyone who is fascinated. Your profits go down, and you might even incur a decline, as you invested quite a bit of money in creating your new product. The next time you come up with a brilliant idea, you will think 2 times about doing something with it, as anyone could immediately steal your idea and sell the same product. You might not disclose that next lovely invention and the rest of us will lose out on the chance to enjoy this new creative invention idea.
With invention patenting, you can use the courts to prevent others from stealing and profiting from your
patent invention.

Many inventions were built on the shoulders of their predecessors. If the car wasn’t invented, the power steering wheel wouldn’t have come into the world. By encouraging inventors to make their invention general public, through patent invention, the patent system promotes creative imagination and invention and the world at large benefits.