(12-30-2012, 08:36 AM)science man Wrote: Well what other reason could there be? (Please give me an e.g.)
Educational and academic purposes. A lot of people who are interested in emulation care about knowing what the hardware does. Dolphin can be seen as a way of exploring how the GC and Wii function, both on a low-level and high-level scale. Dolphin has also unearthed a lot of undocumented information about both systems in its push to emulate both systems.
Others purely want to make a working emulator to increase their programming skills, learn how to work on an open-source project, or just learn how emulators work in general. Some like the challenges of getting an emulator to work.