Boy are you guys so stupid!!!!
But in general, it's not wrong for people if they want to memorize it. I just found it hassle in my case.
Hassle? Easy.
Our brains are not designed to deal with such long string of characters.
Our brains can remember with no problem! (some combinations)
because once you spend it you then have to learn a new private key for the change address.
You can send the change back to the same address. Totally allowed.
This is a private key:
0000000000000000000000000000000000000000000000000000000000000000
This is also a private key:
0000000000000000000000000000000000000000000000000000000000000001
This is one too!
0000000000000000000000000000000000000000000000101010101010101010
Put your mom's birthday in there! Put anything you want in there.
1214890000000000000000000000000000000000000000101010101010101010
...is also a private key.
Therefore, you design your desired private key, which is easy to remember and then make the public key hash. The public key hash will so no signs whatever that your key highly organized.
The first two above kind of suck. But with just a few chunks of easy to remember information BAM!!! you've got a memory key!!!
Cool - eh?