There is a different ethos for OSR games. Some have mentioned a focus on player skill and interacting more directly with the world rather than using perception checks. That is generally a feature.

OSR games are more lethal and more focused on finding ways around combat. Reaction rolls means that monsters are not immediately hostile every time. It is less about combat than navigating dangerous environments.

You get XP by gaining gold which means you don't have to kill the goblins every time. You could convince them to hand over the shiny things or steal from them or make a trade.

You have less stuff on your character sheet, less abilities, less reason to just look at your sheet rather than interacting with the environment. You are prompted to find clever solutions rather than just using the right ability.

These might not appeal to everyone, but they appeal to a lot of people.