Because "he who knows the times is a hero." Do you want to close the case as soon as possible, leave the detention center and return to society? Or do you have to fight for your innocence to the end, with limited freedom and a slim road ahead?
First of all, the public security will not arrest the wrong person for almost all criminal offences. At most, it is a question of whether the evidence is sufficient.
Moreover, under the current judicial environment in our country, it is still impossible to "never doubt the crime".
Therefore, the process of handling most criminal cases is: first grasp some evidence, then arrest, and then take some confessions from you. If you are suspected of committing a crime, arrest you.
As long as you are caught, in principle, a case can be dragged on for a year and a half. Because there are many reasonable means to extend the probation period. Even if it really can't be delayed, it can be judged in the first instance and will not accept the affirmative appeal. In principle, it is no problem to delay the second trial for about one year.
Secondly, as long as you are an experienced lawyer, people have long understood whether you are guilty or not and how long you will be sentenced. Also studying law, the level of judges is not necessarily higher than that of lawyers, but their positions are different.
Because of different positions, lawyers say you are not guilty, but from the perspective of defense, lawyers' ideas do not represent the views of the procuratorate and the court.
The lawyer's judgment on your case from the perspective of defense may make the client very excited and may give you the illusion that you are really innocent. Just like people who make mistakes, they always find various reasons to justify their wrong behavior. That's what lawyers do.
Even if you are really innocent, if you are arrested for a long time, the case-handling organ will not admit it easily unless it is absolutely necessary. At this time, smart people will give me a step down, I admit some criminal facts, you convict me, give me a light sentence, and let me go out early.
Or, in fact, you are guilty, but the evidence of the case-handling organ is insufficient, and you still plead not guilty, but it is impossible to let you go. Such an ungrateful die-hard can have many reasonable reasons to delay your trial. In the end, you will be sentenced, but if you don't plead guilty, there will be no lighter punishment, which will aggravate your sentence in some ways.
From a practical point of view, what if you are really innocent? It is you who suffer. Confession is a better strategy in some ways. In some practical aspects, refusing to plead guilty is the stupidest act.
An excellent lawyer should maximize the client's interests according to different situations, and whether to plead guilty is only a means.