A lot of sites have the word emulation but don't carry ROMs since it's pretty much illegal to have them unless you own the original copy or backup (even though I'm not sure if that's legal still). A lot of the main sites (NGemu, Emulation64, Emutalk) just carry emulators since that's really the main point of emulation, which is to preserve the old games we loved so much (and to emulate the newer ones). There's a lot of places you can get ROMs; you just have to look for them. Plus, when we used to have ROMs, we were bombarded by people begging for roms and ISOs and didn't want to look for them themselves. I'm glad we don't have that anymore.