Teenagers asking Youtube viewers to judge their looks

I think that teenagers asking youtube viewers to tell them if they're pretty or ugly is stupid. Why would you need a strangers opinion on whether you're pretty or not? Their opinion really shouldn't matter at all. Honestly, you're only as pretty as YOU think you are. In the video above, that girl contradicts herself so much. First, she says that the people that call her ugly don't even know her and that their opinion doesn't matter so she posts this video asking different people that don't know her whether they think she's pretty or not. The only thing that should matter is what you think of yourself.