I’m going to hard disagree with this. A lot of the enjoyment I get from creation is the process of others enjoying what I’ve built. Further more, building for others is great for building out areas you’re weak or inexperienced in. Like, I was poor on the accessibility front until I found the thing I created resonated with the visually impaired folk.
Yet people somehow find my work and tell me what they think of it. One day I came to HN and saw my project on the front page. At first I thought someone else had had the same idea as me. Then I started getting emails about it, about my website. Every time it happens it's incredibly motivating. It feels like I finally reached out to someone.
Making things just for yourself and your own enjoyment can be a very lonely activity and you might find yourself with some kind of audience anyway even without trying. That experience can change everything.