I do not use anything like this. I do not Believe any password manager. if I talk about the last pass, this is the only store for password and email. My suggestion, create your own unique password, such us capital latter, small later, number, and symbol. remember one thing, Do not use the similar password to all accounts. Use different types of password for the different account. Hacker can not hack easily any account. I hope your account will be secure.
How do you expect people to remember all their passwords if they need a unique password with [capital letter, lower case, numbers, and symbols] for every account? That's when you need a password manager to store passwords that look like this:
"!FO9;mvgyPv7m$OGPv, (my BTT password looks like this, and it was generated by KeePass - an open source and offline password manager).
You are right, it is not possible to remember many passwords. Generally, I have type in text my all password, and my all important text file I store in my laptop and my pen drive. and sometimes I write in my personal book. A little trouble, but Feel secure.