Is it normal to never experience heartburn?
Yep.Totally normal
Yes. Plenty of people never experience heartburn, and having none is not a sign that anything is wrong.
Heartburn is a symptom of stomach acid irritating the esophagus, not something everyone is supposed to feel. Some people are more prone to it because of their body or particular foods and habits; others rarely or never get it.
If you feel fine, there’s no need to do anything about not having heartburn. It’s just one of those body experiences that varies from person to person.