A:Answer Not sure if trolling, but... I think the 3090 is overkill for 1080p gaming, unless you're running a multiple monitor setup, like a sim racing rig or something. But if you don't want to replace your GPU for several years, or if you do 3D modeling / rendering, etc, the 3090 is more justified. With this GPU, at 1080p, either the games themselves (how they are coded, whether they are 32bit vs 64bit, etc.) and/or your monitor refresh rate will be the framerate "bottleneck". Which is pretty ridiculous when you think about how far GPUs have come...
Nice setup by the way.