In regards to civil litigation law, more specifically negligence and damages,

1. Why are most personal injury cases handled on a contingency-fee basis?

2. Why are contingency fees criticized?

3. How is the fair market value of property determined?

4. What do courts do when plaintiffs cannot be fairly compensated based on a fair market value because of personal value the property has to the plaintiff?

5. Why might it be to defendant's advantage to discount an award of future damages?

Answer with the knowledge you have of civil litigation law