40K just feels too dark to me. The Tau I love to BITS, the rest of the 'verse is a little... dry and hominid-shaped, somehow. I guess I was brought up with the far quirkier sci-fi of something like Hitch-Hiker's, so the Imperialist gun-battle agenda isn't so much my thing.
And welcome, DN.
P.S. Wolfie, please spoiler the massive long picture list.