Some issues must be preserved in post sentence motions in order for you to be allowed to appeal. If you do not complain about the matter in the post sentence motion, when you file an appela the court will rule that the issue has been waived. When we are retained for appeals, we often see that many lawyers do not properly preserve the issues at post trial motions for appeals.
Additionally, even though you think the judge hates, the judge does not want to be overturned on appeal. If you write something in your post trial motion that causes the judge to think that they made a mistake, a judge will consider reversing themselves.