can you remember all your website passwords

I certainly can't remember all the passwords I have used for every site I use. I used to write them down in a small index book but this quickly became messy as I changed passwords and opened new accounts. I now use a piece of software called LastPass. This keeps all of my passwords safely in one place, is available on the toolbar and automatically fills in usernames and passwords whenever I visit a site. It also creates very strong passwords for me when I want to make a new one or change a password so, in fact, I don't even know the passwords I use for some sites! (I could look them up and write them down, of course). LastPass itself is, of course, protected by a very strong password but I only have to use it once per session. One of the big advantages is that I can go to any machine, log on to LastPass and immediately have all the sites I commonly use available to me. For a small annual subscription, it's also available to me on Android, so my phone and tablet can also use it. There are several other similar password managers and I haven't tried them but I do find LastPass easy to use and, I believe, as secure as anything can be on the Internet.

What if you keep a unique password for yourself and use it in all websites? Alzymer is a bliss, but it would be optimal to practice online memory power boosting games.