Yeah, I'm halfway through and it's not that I find it difficult (I'm only on Hurt Me Plenty), it's just kind of boring or maybe uninteresting would be better. Kill enemies, activate something, rinse repeat. I know that is Doom and always has been Doom, it's just annoying that it seems since I waited so long to play it that my preferences have changed enough that I don't know that I have it in me to finish when there's other games I could play that I would enjoy more (like Mass Effect, lol). I hate getting old.
But Doom's always been that: go into a level or area, kill enemies, move to the next one.
I dunno, franchises often should just stay in their lane, TBH - we got too many franchises changing things drastically and majorly when stuff's already good there, works well, and is not broken...and they all want to either copy the other games and their trends for what's hot, causing too many copycats on the market across the board.
We've got Final Fantasy now turning into GoT setting meets DMC combat and turning into a real-time Action-RPG and is no longer a turn-based JRPG (FF16);
Greedfall 2 is changing its combat & turning into old-school DAO CRPG combat more or less with the real-time with pause BioWare style & full-blown party control (straying from its hack-n-slash-y Souls-like combat system with Bioware pause direction and you can also have 2 other AI-controlled party members with you);
Lies of P 2 has rumors of it going open-world; and more stuff of this sort.
Shadow Warrior Reboot series - SW Reboot was more or less old-school Shadow Warrior design & boomer-shooter stuff of that sort; SW2 turned into looter-shooter with some RNG stuff; and SW3 turned into Doom Eternal. Talk about a franchise having an Identity crisis.
No wonder COD sticks to its usual bread and butter and still does gangbusters every year, as you know what you're getting: single-player campaign that's 5-10 hours and a robust multiplayer skirmish mode that they've been doing since COD4:MW (with unlocks, level-ups, grind, etc).
If Id wanted to do a level-grinding looter-shooter or shooter-RPG, maybe create a new IP or spin-off for that? Doom's always been expected to be what I mentioned in the first paragraph. They did a semi open-world game to do something different; that was RAGE 1.
And Thank God that Doom hasn't changed THAT much. Sure, it's changed a bit - but, the main concept's still the same, for the most part: go into a level, slay some demons, move to next area. So many franchises with new iterations of sorts want to add Action-RPG, loot-grind, leveling-up system, and/or open-world - it just gets tiresome. I don't need more treadmills to try and run up here. Don't need more old-game franchises adding grind & loot-tiers (think what AC did w/ AC Origins, after The Division hit it big) and/or open-world elements that didn't have it before (hello there, Lies of P 2) - we got enough of those already. For me, it's nice to go back to any Doom game to just slay some demons and then move to the next level.