Why I never use custom domain

I have published a post Custom domain for New Blogger, however, I myself never use it for my blogs.Reasons: In the first place, I don't want to bother myself with renewals. More important, I am now 57 years old, going on to 58. If I am lucky and live to 100, there will be still 42 years for doing the things I enjoy. But I know there must come a time when I will no longer be around to renew domain