You should at least try to imagine how catastrophic losing access to your email would be. How many accounts on other websites are linked to your email? Which of your banks have you set up backup emails beyond your primary? What about car registration and voter registration? For me, those both use email 2FA. For a while I was using a Nest thermostat; my house temperature in a large part was linked to my email.

Why exactly? Doesn’t seem like much fun.

I don’t imagine a lot of catastrophic things that might happen to me. If really really bad things happen they happen. Some I work really hard to prevent. Others might happen and I don’t do anything to prevent them. Most things are somewhere in the middle.

No, you won't deal with that. Because 'your' email address would be no longer yours and there would be nothing you can do at that point, including reading your past emails.