People about cosplay...
It depends on what you mean by popular. It’s more or less exclusive to conventions, which have the benefit of only happening once each year per con. Attendees like myself have time to craft and sew awesome things. I know why I like it-it pushes my creative boundaries and has become my full time hobby and side-job. It’s very fun to be someone else, but it’s also fun to show off your work. I made my husband a great Groot costume for DragonCon last year and it was one of the best weekends ever. We had a blast as ‘Rockette’ and Groot. There’s something about participating in a huge fandom that is just pure fun.
I don’t think it’s really all that popular with the general public, when people don’t know who you are it can be disappointing. They don’t really know what to make of you when you come into a restaurant painted blue with a handful of storm troopers after an event or convention. Kids seem to go nuts over it though, I’m also a member of Rebel Legion and dress as Princess Leia for events. Adults are amused but kids go crazy for Darth Vader. Popularity really only seems to stretch as far as known characters.
Let me make it simple for you.
These are some factors which make this fun-filled activity very fascinated.
1) It is Fun
We are all fed up of real life sometimes, the animated world always considered as utopia and we like to experience that Utopian life as the way it is – funny and playful. It is entertaining and enjoyable.
You can express your love for the character which fascinates you. This is the best way to enjoy the fandom of a particular character that you really like it and want to hide your personality under the charm of whatever character.
People like to be a center of attention. Getting compliment on your creativity or catching the eyes of your friends towards famous movie character is always flattering.
We all like creativity, sometimes costumes are crafted by hand. The process includes sewing, cutting, using something completely different thing for entirely different purposes make you proud of cracking the unique idea that nobody ever think of.
To answer your main questions, No and No. Cosplay is supposed to be about inclusiveness, fun, and showing your love for a character.
That being said, as with any group of people, there will be jerks on both sides. There will be those that make their costumes and look down on those that buy them, and vice versa. Jerks can be found at all levels of cosplay, just like regular society. And just like regular society, you have the choice to ignore the jerks and go your own way.
If you are happy with your cosplay, not competing in a 100% bought cosplay and are having fun, that really is all that matters.
People who make their cosplays receive just as many nasty comments and critiques as those that buy them by the way.