Walking barefoot inside the houses in Indonesia is comfortable, more fresh, clean and polite because shoes might be wet or dirty.
People leave the shoes automatically at the door and are very used to wear sandals and flip-flops to “perform” it easily.
Meanwhile, in some places of Europe like Spain when we get home we replace the ‘street shoes‘ for another pair of shoes that we only use at home. In winter they are pompous and warm while in summer they have to be fresh and open. Guests don’t need to replace the shoes, they can go in with the street shoes.
In some houses is believed that walking barefoot will make the floor dirty full of footprints and the feet or the socks can be smelly so it’s not really polite.
Interesting cultural differences.