Paul Farquhar
Legend
The most successful D&D video game ever - does not even bother to track ammo.It's just like how ammunition in video games forces you to constantly change weapons and change your play style.
As for Doom, that has the ridiculous magic pockets trope, where the protagonist lugs around about 8 huge weapons, without being burdened by them. Sorry, that breaks my suspension of disbelief more than infinite ammo does. Then you have Halo, where practically everything you fight drops a weapon you can use - even if it was anatomically very different or you blew it to pieces. Owlbears dropping usable weapons is also too ridiculous for me. Real world soldiers try to keep what they have to carry to a minimum, because one thing that will get you killed is being over-encumbered. Wagons, horses, hirelings aren't going to be willing are able to crawl through caves, and will die in the first monster encounter anyway.
Reasonably, characters should carry two to four weapons, no more than that. Fighters should be distinguished by being able to use those weapons better than the other classes. Not by crawling through a dungeon with a dozen different types of polearm strapped to their back.