1 death per map

I have a question for GGG. Why are there 6 portals to my map, checkpoints all over the map, but when I die the map is over. What is the point of the portals and checkpoints? Dying in a map early on especially when you don't have the right gear yet or resistances yet feels really bad and makes me not want to play.

Portals to pick up more loot. Checkpoints to move quickly through the map in case you missed some items/rare mobs/league mechanics.