Beautiful Disgrace said:
People use fake pictures to get attention. If you're attractive, more people talk to you. If you're not, you get ignored. That's why it matters to those people. Simple as that.
Does it make it right? Nope. But that's the general logic to pretending to be someone you're not.
As someone who has done it and is attractive I find this to be incredibly simplistic and even wrong for a lot of people. Do a lot of people steal another's pictures because of insecurity about their own looks? Sure, but to say they do it solely for attention is not understanding a lot of the core motivations involved. and they're different for everyone.
For instance, not sure if anyone remembers but I supposedly had a mustache when I first signed up. I chose a guy I went to high school and never kept in touch with to yank pictures from. I remembered him, he didn't remember me. And the obsession was real. Back in 2008 there were very few accessible pictures of him online. But I found them, scouring pathways with everything I knew about him to access blogs and photobucket accounts for him and his friends, just to snatch some photo or glimpse of him that I could have ready in case someone asked what I looked like. And back then, here, I was well liked and people often asked for a glimpse. And that was all I took from him, just the face, the mask.
The guy I chose was not model handsome but moderately good looking, tall, lanky, dark curly brown hair, and a mustache sometimes, with a great smile. A guy I'd like to see myself as, merely attractive to me for his similar body type to mine at the time except he was actually a dude in possession of a penis. I reluctantly posted pictures because my intuition and Trygon's massive presence on the forum at the time made me paranoid. And when I did, I usually took them down to avoid prying eyes from tearing apart my facade which was given strength by the stories I wove about my life rather than an image people had to look at. And no, I didn't like attention that much. For the longest time, I had a complex about them asking me to be a moderator because in my paranoid delusions and the sickness I'd woven around myself, I sincerely thought that everyone knew and they were trying to get me to confess. If my pathology at the time made me smarter and less self-absorbed, I would have acknowledged that public humiliation and outing was more Trygon's admin style than subtly making a person think everyone likes them until they break down from the weight of their own demons.
Again, it is a shameful past I have to live with but I bring it up not to endorse or defend but to offer a different perspective on the "why". It's not always a clear cut "they wish they were attractive" mentality, since the guy I chose was a "grow on you" kind of attractive, not superficially good looking. But he was a man and that's what I personally needed and wanted for my fantasy.
I do wish that others who have had experience with this sort of thing would step forward and share their experiences. Because although yes, I'll agree it's morally wrong, this type of ruse, particularly the lying about oneself or sharing fake photos, it is my personal belief that it is relatively harmless most of the time. Not victimless and certainly predatory but overall, not intending to cause harm to those who fall prey to the ruse.