SEO is not only a business it is a desire to give your presence in the web. If you want to become popular in web then SEO helps you.
With the help of SEO you can optimize your blog and site. you can make your personal network and also you can earn money.
if you have owner of any product then with the help of it you can increase the sell of your product with the help of some shopping sites.
Now in India the online shopping is in fashion so with the help of SEO you can sell and purchase your product.
now in the Online market some very good service provider sites are available like ebay and amazon. with the help of these sites you can easily purchase any product online.
So the Importance of SEO is very high.
Many people learn SEO because he/she want to get job but it is not a only reason to learn SEO. Some people learn SEO because he/she want to fulfill his/her desire.