True. I do think, however, that the essence of complex addresses and keys is basically protection and safety. For instance, compared to cryptocurrency wallets, bank accounts have proven to not be as secure. Of course, banks have a tight security system but I do know, hackers would much rather hack 4 digit ATM pins than 20 digit wallet keys. Here in Nigeria, a friend of mine lost a huge bulk of money to online fraudsters. All it really took was his card number. Now he feels more secure storing some of his funds in a cryptocurrency wallet.
Of course, humans are lazy to write down and store wallet keys. But i think hardwork is borne out of necessity. Only when one sees the need to store those keys will he, and if he doesn't, its his folly