Personal Websites vs Blogs

I wonder.. Why do we create personal websites when the availability of software like Blogger makes this so easy. It's a question I guess of what all you want to do. I put a site a while back www.davebour.com.
It does a great job for me of personal photos and all but doesn't draw traffic...probably not a bad thing. Why do you want traffic I guess is the next question...probably to draw in some type of business...or exposure...
Are you an expert...what's it benefit...who needs to know...
How many blogs can you manage is the next questions...
Where am I going...I really don't know...thinking out loud.
That's all for now.
D.