Don’t ever fly, then. Pilots use written check-lists all the time - especially in emergency situations.
Of course they should have memorized the basic procedures for normal flying and handling emergencies, but those are mostly independent of the type of plane they are flying. In some countries (especially those with reliably good weather) a complete beginner can reach that minimum level of competence (and get a pilot’s licence to prove it) in as little as one week of full-time training.