Logician: I have not said it is shallow to judge a person entirely by looks, only ridiculous. But you called it greedy. I prefer your word.
Neither have I claimed to know what works for guys. I said we know how guys work, not what works.
far east: “SO why do girls get offened when asked for a picture.”
One or both of two reasons. A: Every girl (even the most beautiful) has gone through a process of hating and subsequently loving (or coming to terms with) her looks. Judging her on looks is as personal as reading her diary. You asking for a picture, and then judging her on it is reminding her of that struggle. B: It is frequently the one thing about her which she cannot change nor fake. It is not something she has worked on, just something she was created with. It shows nothing about who she is! She wants to be acknowledged for all that she has to offer and overcome but instead you are merely noticing that which she had no say in.
And you want her to send a picture? Go ahead and base your decision on her looks. But at least give her the decency of meeting her first.