Why do people want trash?

[Felis]

Edit: In Zelda and even some Final Fantasy games, trash was optional if you moved carefully! You know: In FFXIV we can walk and run, but SE never made Traps that used that "skill". In 1.x we could avoid some trash when walking and it was fun.

In Hullbreaker Isle are 2 trash mobs you can avoid by walking (in the cave before the 2nd boss)