I have to say I haven't tried that myself nor have I looked at the prices so my question is: All the fun of having your own server aside, why wouldn't I rather

I have to say I haven't tried that myself nor have I looked at the prices so my question is: All the fun of having your own server aside, why wouldn't I rather just run a site like that on something like amazon ec2 and stop worrying about hits and load even if it is just a personal blog?