Perhaps many bloggers who choose Blogspot or WordPress.com in building blogs for free. I do not think there's a problem with that if you just want to blog. But if you want to look more pro and ease in customization, in my opinion, would be much more profitable when using WordPress.org script with your own hosting.
Why WordPress?The reason is simple. WordPress.org offers more flexibility than Blogger, both from the side view, feature completeness, even SEO. Read more, here are some of the main advantages of WordPress versus Blogger.
• Control Website
• Easy Management
• Plugins with Additional Features
• Faster Website Access
• WordPress has anti-spam
• Multiple Authors
• Can block visitors from certain IP
• We can see site visitors
• Very Easy To Use