Windows size short curtain is a better option if
1. You would like to protect your privacy while meeting your budget
2. You would like to ease your maintenance especially when you don't have a helper or you have aged
3. You have kids at home
Advantages of windows size short curtain
1. Protect your privacy at lower budget
2. Less material used and thus lighter, making your yearly maintenance easier.
3. Kids cannot play and hide behind the curtain and you have piece of mind that the curtain does not fall easily.