Blogger is better than WordPress.com
I was just thinking about this topic for past few days. But you know, Blogger might be better in the long run if you want to buy a domain and monetize your site without going self-hosted. Getting a custom domain on WordPress.com requires you to upgrade to the different plans, which costs nearly $56 a year (Premium one), whereas on Blogger, a custom domain is $ 10-15 a year with free hosting. Also, a Blogspot blog can be integrated with AdSense, whereas on WordPress.com you have no option other than WordAds whose rates are much lower. Plus, Blogspot is primarily integrated with Google services like Google search console, Google Analytics whereas on WordPress.com you'll need additional plugins to install the same. The major drawback of Blogspot is that it's incredibly hard to discover new blogs, whereas on WordPress, the Reader does this great job.