Height doesn't matter... What matters is the personality of that girl :)
And here are the benefits :-
1. Easy to grab hands while walking
2. Feels loved when she hugs you - Guys feel most comfortable, easy as well as loved when they hug a short height girl as you must have heard earlier that a girl's height is perfect when her head rests on the guy's heart when she hugs him. This is possible only when the girl is shorter than a guy.
3. Getting ready for party? She will save your time - yes you can both use a mirror simultaneously, without an argument. It's a hard fact that girl's use mirror for a much longer time than guys, so being with a short height girl would never get guys late for a party!
4. Easy to make her feel special - Mostly girls who are short, are also slim. So the biggest advantage for a guy is he can lift you up whenever he feels like without giving it a second thought.
5. She will grab you attention throughout her life - Last but not the least and of course the most important of all, short height girls would never get above 'sweet 16'. Their adolescence remains their entire life. People tend to mistake you for being younger than you are and you can hide your age as per your mood.

Now decide for yourself :)