Aside from the fact that I could reach anything with my mouth, another cool aspect of giraffes is that male giraffes compete for supreme dominance through "necking", which is basically the two giraffes swinging their necks at each other, like punches.
If I were a giraffe, I'd dedicate myself to becoming the champion of necking, through training and exercising my neck to becoming sturdier, harder, stronger. I'd have the most powerful neck on the planet. This is why I must become a giraffe, so I can achieve this goal.