Does being baby-faced have any advantages?

I'm a 19-year-old college student who regularly gets mistaken for 16. I'm petite, but not terribly short, soft-spoken, with a round face, large ears, and big blue eyes. I never get "you're so pretty!' only "you are so frickin' adorable!". I have trouble being taken seriously, and I'm afraid that guys aren't interested in me because I look too much like somebody's kid sister. What do you think? Are there any pros to looking young for my age? Guys, what do you think of baby-faced girls?