This is conflating hard with unpleasant. A child just learning to read is going to find it hard to do, yet through adults pushing them to do the hard thing, they learn to read and sometimes begin to find it to be pleasurable. Building most skills is hard, yet that doesn't exclude taking pleasure in it. Many of us taught ourselves to code, the fact that we enjoyed it doesn't mean it wasn't also hard.

We've all learned the lesson that sometimes you have to struggle through something hard, to be able to access better pleasure.