I came across the thought that I honestly never had to use class nor constructor all this time and started to wonder if there are cases where I should use them? For example, below codes are basically same except one uses constructor and one doesn't.

Using constructor:

function Food(foodName, foodPrice) {
   Currencies.call(this, foodPrice);
   this.category = 'food';
   this.name = foodName;
}

function Currencies(usd) {
   this.usd = usd;
   this.won = +usd * 1000;
}

const pizza = new Food('pizza', 30); // { usd: 30, won: 30000, category: 'food', name: 'pizza' }
const burger = new Food('burger', 10); // { usd: 30, won: 30000, category: 'food', name: 'pizza' }

Not using constructor

function food(foodName, foodPrice) {
   return { name: foodName, category: 'food', ...(currencies(foodPrice)) }
}

function currencies(usd) {
   return { usd, won: usd * 1000 }
}

const pizza = food('pizza', 30); // { usd: 30, won: 30000, category: 'food', name: 'pizza' }
const burger = food('burger', 10); // { usd: 30, won: 30000, category: 'food', name: 'pizza' }

To me, not using constructor seems bit simpler so I would avoid using it AMAP. What do you prefer and why? And when exactly do you decide to use constructor instead of "regular" function?