Tired of typing passwords logging to SSH servers you often access then switching to keys to authenticate will be a game changer. Complex passwords will in general provide a good level of security, but they are tedious and slow to type. Make sure these passwords are strong! Using passwords to authenticate also prevent you from running local scripts that automatic log into other computers (like servers), running tasks or perhaps you want to have a backup/copy running between your laptop and server(s). The good news is that's a simple solution to all of this.