I enjoy the flow of the new Doom Eternal, once you get the hang of it you can keep an infinite supply of health and ammo that only runs out when everything's dead - and you end up taking on much more than you thought possible.
However the jaw-dropping, frightening game that Doom was in 1993 will never be recaptured. Yes, scary games existed. Yes, 3D FPS existed. But nothing came close to Doom, it was a graphical marvel. I'd show it to friends, grandparents, anyone who'd look and they'd all either be amazed or reach for the bible. Their idea of video games was mario, Doom broke brains.
Doom 2 is what I played most. At the time, playing over a local BBS with my 28k modem (the fastest available!), I could see that network play was the future of gaming.