"I won't play this piece"

"I don't like it."
"It's too boring."
"It has too many accidentals."
"The pedal part is too complex."
"It has too many voices."
"It's too long."
"This piece is in minor. It's too sad."

We all are different and like to play different things. Your friend's favorite pieces might not mean anything to you and that's OK.

It's one thing not to play a piece because it's too complex for you at the moment. It's completely different thing, though, to believe that it's too complex.

At the beginning we like to play what we want. But if we want to reach the next level, we also play what we need.