Transition to Cow's Milk

Okay so do all babies/toddlers hate cow's milk when first introduced to it?!

Hallie keeps spitting it out when I give it to her in her sippy cup. Once I even put a touch of chocolate syrup to lure her into swallowing. No LUCK! Did it take awhile for your kids to take to cow's milk after being nursed or is this just one more area my darling daughter is showing her stubborn side?