mrjock
Blogging is a very easy to way to earn money without much effort if you are great are creating and writing content.
How you make money from the blog on the other hand is the hardest part. AdSense, Sponsors etc can take a lot of time and effort finding and setting up.
Well if writing comes natural to you then blogging should be very easy.....
Making money is the harder part.
Sounds like you are contradicting yourself a bit. Blogging is either an "Easy way to earn money", or
"Making money is the harder part".
But that is not necessarily the question (or answer). Fast or slow, it depends on how long and hard
a person works. Also, what a person is doing to create traffic, make or deliver content, and the many
other things that go into making a successful website.
For some people, the money will never come from a blog. For others, the persistence and regular
effort will pay off - some in less time that others.