PGP Key

I am slowly making the switch from Microsoft Outlook to various open-source applications. As part of my migration from Outlook to Thunderbird for e-mail, I have decided to give myself the option of secure e-mail. My public pgp key can be found online. You can use this key to verify that e-mails sent by me were actually sent my me (assuming I “signed” them).

How much will I actually use this? I have no idea.