wildtype87 saidI don't know if height is completely genetic, but it's largely out of your control, unless you undergo bone-lengthening surgery.
http://www.shortsupport.org/Health/Leg-Lengthening/procedure.html
If you're short, get used to it (and all the short jokes), fast. No one likes a guy with a Napoleon complex...unless you're a power bottom. 
I hate it when guys have Short Angry Man Syndrome, just wanna gag them.
Stop whining and work with the height you have, being tall aint all that as my bruised head can attest
Every door frame is an enemy
Every low hanging beam a bump waiting to happen