Why to Blog?

According to Wikipedia, a blog (a combination of web and log) is a personal journal published on the World Wide Web consisting of discrete entries typically displayed in reverse chronological order so the most recent post appears first. Blogs are usually the work of a single individual, occasionally of a small group, and often are themed on a single subject. Blog can also be used as a verb, meaning to maintain or add content to a blog.

Before blogging became popular, digital communities took many forms, including Usenet, commercial online services such as GEnie, BiX and the early CompuServe, e-mail lists and Bulletin Board Systems (BBS). In the 1990s, Internet forum software, created running conversations with "threads." Threads are topical connections between messages on a virtual "corkboard."

Then why to blog?
Every day, Blogging is becoming more and more popular. There are thousands of blogger blogging on different genres.  People blog for various reasons.  Some bloggers blog to share knowledge, some blog as hobby and some blog to make some money. There are no concrete reason why people blog. Following points might help you make your decision about blogging.
1. To Express Thoughts and Opinions
Blog is one of the best places to share something and be heard. If you choose a www.blogspot.com or www.blog.com, you can speak your words for free. When you choose a hosting company, you have to pay to initialize your blogging platform.
2. To promote products or service
One of the cheapest form of promoting services, products and other things is a blog. So people choose blogs to promote their products or service.
3. To help People
Blog is also a place where people share something similar they experienced. These kinds of blog are very helpful to get and provide solution for a particular problem. Blogs related to health related and parenting are written for this purpose.
4. To introduce yourself as an Expert
Blogs are amazing tools to help bloggers recognize themselves as experts in a field or topic. If you're in search of a job or trying to build a career in a particular field, blogging can help legitimize your expertise and expand your online presence and platform.
5. To Connect with Similar people
Blogging helps to bring people of same thinking and opinion in a common place. When you start a blog, you can find people who want to share same opinion, knowledge, feelings and thoughts.
7. To Stay Updated in a Field or Topic
Success of any blog mostly depends on frequency of posts and freshness of information you provide. Blogs helps you to be updated in your field.
8. To Stay Connected with Friends and Family
Due to the invention of Internet, The world has become a small village. Blogs are the great ways to be connected to your friends and families from any part of the world by sharing photos, videos and things of interest.
9. To earn Money
Blogs are becoming more popular tool to generate money from online advertisement. Even though, most bloggers don't make a lot of money blogging, but there is a great potential. All you need is dedication, hard work, practice and patience. 
10. Finally, to Have Fun
Blogging can be a hobby for many people. They take it as a fun. People have hobby to share knowledge through a blog. 
Now, suggest me if you have any more reason to blog. Happy Blogging!!!!