The key downside to hosting directly on S3 is it only does static pages. So it'll be manual HTML or a static-html-generating-tool like Octopress - none of this fancy dynamic content.
If you're happy with this constraint, hosting on S3 works pretty well for me.
I'm actually very happy with that constraint: I think something statically generated would be perfect for my goals and much simpler to use, understand and customize than something like Wordpress. The only thing to miss would be comments, but I was planning to use something like Diqus for that anyhow. (I will start a blog, one of these days :P.)
Also, almost anything would be an improvement over my current setup which is using PHP on Apache to do what a static compiler would do much better. All I really want is a way to factor my website and reduce code duplication.
The key downside to hosting directly on S3 is it only does static pages. So it'll be manual HTML or a static-html-generating-tool like Octopress - none of this fancy dynamic content.
If you're happy with this constraint, hosting on S3 works pretty well for me.