Agree. Who would want to lose in order to appeal?
Is every case accepted for appeal? What percentage unless emergency action? What percentage of appeal cases are overturned?
In federal court, every final order of a district court is appealable to the Circuit Court of Appeals, as is every grant or denial of an injunction. Other preliminary rulings (including those granting or denying a TRO) are generally not appealable until the whole case is over. A further appeal from a federal court of appeals to SCOTUS is discretionary with SCOTUS.
On the state level, some states are somewhat different, but most follow the federal model.
What percentage of appeal cases are overturned?
The average is about 15-20%, IIRC.