Sometimes, creating too many emails can make you get confused when you don't have access to the book that you wrote the passwords if you are away from home. We are in the same shoes, I have a specific email for gambling and use that email to register in any casino that I want to gamble in. I have a separate email for exchange and so on. The important thing is that I only keep funds that I can afford to lose with a third party.
I see no point creating multiple emails when you can make use of two probably the other must not be exposed, in terms of written passwords you can still save them although someone insisted I make use of password manager app so I don’t have to bother about having password issue yet I still don’t trust the process. The easy solution is having few emails so you can be able to differentiate them when encountering any difficulties, memorizing this can be difficult no doubt definitely people still prefer google manager.
There is a point in creating multiple emails for different purposes. We have friends, business, jobs, gambling, subscribe to events, sports, or else. If you only have two emails and you split it among those purposes, you will see your email will be full of those things. I guess you will directly remove those emails

But I accept it if you say like that because we know what suit us. We also know how to use email better than others.
Same here, I have multiple emails for personal, job, casino, e-commerce and more so that the mail will not mixed to each other.
It’s easy to filter the mail you are looking if you have different email for different account purpose. I learned my lesson already on my first email which I use many different account type that is now flooded with different email promotion that sometimes I overlook important mail.
At least on separate email, you can check mail based on what specific email type you are looking for.