I quizzed him a lot on this point and i suspect the truth was that it was like a lot of things at that age: you don't have any clear reason, you just do it. You do it because you think it might get a laugh, or because you want to see if it'll cause a stir. And when you're asked to explain afterwards, it doesn't seem to make any sense.
Kazuo IshiguroWe took away your art because we thought it would reveal your souls. Or to put it more finely, we did it to prove you had souls at all.
Kazuo IshiguroMany of our deepest motives come, not from an adult logic of how things work in the world, but out of something that is frozen from childhood.
Kazuo IshiguroWhat is the point of worrying oneself too much about what one could or could not have done to control the course one's life took? Surely it is enough that the likes of you and I at least try to make our small contribution count for something true and worthy. And if some of us are prepared to sacrifice much in life in order to pursue such aspirations, surely that in itself, whatever the outcome, cause for pride and contentment.
Kazuo Ishiguro