I learned how to use one. Having a skill is having a skill (plus there was some bad influence from the movie "First Blood"). It might not be worth the effort for you:

• Suturing is a perishable skill
  
• A suturing kit has only a limited shelf life, instruments may not stay sterile as long as the sutures
  
• On some partsof the body you can do additional damage
  
• If the wound is contaminated, you must not suture
  
• If there some swelling, you should not suture
  
• If you do not have anesthetics, suturing might involve a bit of pain
  
• In most cases less invasive gear is adequate