I'm envious of your 3950x, but on the other hand I suspect I'd never actually max it out. I should get into video editing or something to justify more PC upgrades...
Even then... Literally the only time I max it out is when I'm doing a handbrake x265 encode on a faster preset... the slower presets only use about 75% of CPU. If I did it again, would probably go with a 3900X and spend the extra $250 towards an RTX 2070 Super instead of the RX 5700 XT that I got.
My old computer was over 5yo at upgrade, with a mid-cycle upgrade of a couple components, likely this will be the same, though I don't think I will ever go RGB again.
