What you actually need is a very secure password, and secure passwords are often very hard to remember. Probably you treat Steemit as another social media website, so you might be surprised, why your Facebook password is not strong and good enough. (BTW, I hope, that you do not use exactly the same password on all type of services - that is very dangerous!)

The reason why your password has to be so secure is simply because with this password you also manage all your funds. So your Steem password should be as hard to guess as your password to your bank account!