We had about 70 Blogger.com (blogspot) blogs for several years. We were using them on our own domains and hosting. But earlier this year we had to close them all down. Why? Because they decided that they did not want to let people use FTP to update the blogs on other hosting.
The point I am making is the free blog hosting is very nice, but not if the provider changes things or decides they don't want you as a customer. You don't pay anything and you have no rights or control.
We are now going to be using Nucleus CMS for all our blogs because we can download the script and run it on our server. You can do the same with WordPress, so I suggest you choose from the options that give you 100% complete control of your blog for all time.