I just want the dungeons to feel like I'm delving into them and managing my resources tactically.
What is stoping you?
If the game is designed with the idea that you can camp anywhere and fast travel to town at any time, then the encounters are not designed to be of the appropriate challenge level to tackle subsequently without rest. It is a design issue, not a player choice issue. I can choose not to rest as long as I want, but it doesn't make the game feel any better if the designers expect me to rest whenever i can. It affects the encounter design.
In fact, it's quite lazy and bombastic. It allows larian to build this skeletal world conjoining big playground-like set piece battles without consideration for player resources and pacing. It's why the game feels so empty and static.
