Privacy has become a very important issue in modern society, with companies and governments constantly abusing their power, more and more people are waking up to the importance of digital privacy.
In this community everyone is welcome to post links and discuss topics related to privacy.
much thanks to @gary_host_laptop for the logo design :)
Yes, it's worth it. I own mine for just the reason you give. You can take it to any other provider. And there's no danger of the email provider deciding to close your account or cutting you off unexpectedly. Imagine losing your email access. At least with your own domain, you can switch it that same day to someone else.
Unsure about whois lookup privacy. My registrar hides my details as an option. Anyone looking up the domain just sees them as the contact for the domain.
Yes, absolutely worth it. I started about running my own mail server about 20 years ago. Then migrated between several mail providers over the recent years. Using my own domain allowed me to preserve the same mail address. Meanwhile I settled at Proton and are a very happy customer.
About the whois thing, German domains (.de) don't show personal information. You still have to provide that info but it's only visible to law enforcement and the like.