People about cosplay...
There are so many things, and most people have different reasons. Some people go to an anime convention and see the costumes, some just love a character so much they want to be them, some like performance, while others are more into the crafting.
The main reasons I started, and still, cosplay, are the crafting elements and being able to bring my favourite characters to life. There’s a huge challenge in planning how to bring some of these anime and video game characters into the real world.
One other thing that can be fun is the reactions of others. I get a lot of comments, mostly positive, on my costumes and people can tell how much work I put into my costumes. I’m not the best at the performance, but I got a lot of positive feedback this past weekend in the costume contest at a local con. It’s my creative outlet and I love that there are people who accept cosplay. I have got some negative comments, mostly from people who don’t approve of costumes, but the positive feedback and friends I have made through cosplay keep me going.
No, it is perfectly normal to buy a cosplay costume. Even professional cosplayers buy or get the costume made from someone else. However, making your own costume has a different thrill to it.
What is important though, is how you carry the costume and how much fun you’re having while cosplaying.
As for “devaluing someone’s participation” goes, some may feel that your cosplay is superior to them, when they took more efforts. However, it is not supposed to be that way as these things are done for fun.
The only place it should really matter is in competition. Don’t enter a workmanship based contest with something that you bought or commissioned, and don’t take credit for the work of others.
That said, some contests have a category for commissioned or purchased costumes, you would be fine if you entered there.