The most realistic one is that if you’re convicted of a crime, you have an absolute right to appeal. So, whether or not your appellate issues are strong enough to get relief for you at the end of the day, you should always take an appeal because it is your right and you’re entitled to it. And if you can’t afford a private lawyer to handle that for you, you’re entitled to the appointment of a lawyer at public expense or a public defender.
The Basic Reason is to Challenge Any Adverse Rulings that the Trial Judge Made
The reasons for appealing, again, are to challenge any adverse rulings that the trial judge made during the course of the trial where your lawyer objecting to certain evidence coming in that the judge allowed, where your lawyer objected to certain testimony or opinions coming in, the judge allowed and overruled, anything the judge ruled upon at the trial that went against you is subject to filing that direct appeal. Because it’s your right to have that appealed, there’s no sense in not to try because if you don’t try, you’re stuck with the sentence that was imposed on you.