Another domain? You betcha!
But why another domain?
In a nutshell, it’s for the ability to register a more professional email address for work-related use (think resumes and so on). Coupled with WordPress G Suite integration, this allows me to easily create an email address that is truly unique (since a similarly named Gmail address has already been taken 😛 ).
The cost isn’t too high, about $100 CAD for a year’s worth in subscription fees.
Now, for formal communication, I am reachable at firstname.lastname@example.org but any other conversation should be directed towards my personal email, email@example.com.