That depends on how one defines sin, does it not? For that matter, does a Buddhist monk (as one who most evidently does not want Christ as Lord) want sin and idolatry?
As for Heaven, it's a place in which I have no belief that it exists, so the point is largely meaningless (to me, anyway). You might as well be saying that I wouldn't like Middle Earth or Narnia.
That is quite evident, by way of contrast when they (or anyone) becomes born again.
Those who really want what Christ is will find Him.