Scribblrs says:

There is a HUGE audience out there looking for interesting content.

You just need to tap into them.

In 2016, 46.1% of the world’s population is now online (sources for calculation: InternetLiveStats.com, GeoHive). By comparison, only 1.3% was online back in 1996 and 17.6% in 2006. With your own blog, you have the opportunity to reach readers in all corners of the world. And over half the world (53.9% to be exact) still doesn’t have internet access, meaning your potential audience will only continue to grow in coming years.

This table does a good job breaking down the number of Internet users (and percentage of population) in each country.

A few Reddit comments:

https://reddit.com/r/dataisbeautiful/comments/4vu52m/how_the_worlds_34_billion_internet_users_behave/

There are 1,024,816,803 websites live right now, according to Internet Live Stats.

About 4.3 million blog posts are published every day. That’s 51 posts published every second.

There are over 54,000 Google searches conducted every single second.

According to one recent study, the first 4 results in a Google search get 83% of the clicks. The first result alone gets clicked as much as 40% of the time.

The average first-page result in Google contains 1,890 words.

The average blog dies after just 100 days.

The most expensive domain name ever sold on record was LasVegas.com for $90 million.

Over 25% of all websites are powered by WordPress and nearly 60% of all blogs, almost 10 times its closest competitor. 

63% of bloggers earn less than $3.50 a day on their own blogs.