>>405273172
It's simple geometry anon.
If i know you as a hot anime girl with girl voice, when i think of you that is the imagine my brain will conjure. 
If i meet you irl, the whole perception of you gets ruined. You are actually a fat neckbeard and i can never unsee that. I no longer can be aroused by thinking about you, i no longer am interested in having VR sexo with you, because the perception of you is ruined forever in my head. You go from a 10/10 girl, to 4/10 guy and i'm not even gay so more like -4/10 and it's all ruined. Irreparably. I do NOT want to see you IRL, i do NOT want to know who you are IRL, it will ruin EVERYTHING. 
This might seem hard to comprehend to someone living in a society where physical social presence is still dominant, but in not to distant future, what i said above will be the absolute norm.