There is always an Amiga running here. I have so many I guess I'm spoilt for choice.
I use mine for file management, disk searching, managing my website content and fun. I love my Amiga gaming. I also do a lot of video editing and the like.
In terms of exclusive... that would be difficult. I currently have set up an running, in addition to the Amigas... Acorn A5000, A7000, RiscStation, Atari Falcon, 2800 and 130XE, Spectrum ZX81, 48K and +3, Tatung Einstein, Amstrad 464, 6128, 6128PLUS, MegaPC and PCW9512, Sony PS1 and PS3 plus Commodore C64 x 2 and the 128ds x 2 desktop.
And they generally are all fired up every day.... My world is retro so not too much time on the internet other than for posting on the group.