It's a thing of choice though as some people just prefer owning some properties just for owning sake. They don't mind if their property aren't productive, they just continue to acquire the wealth regardless. Some on the other hand, own properties for future sake, like for their children to acquire them when they become old enough. But to me, it would still be better to get properties that would earn us some reasonable amount of income continually for a long term. You don't actually have to limit your property, you can continue acquiring if you have enough money to buy more.
It is very good for us to know the difference between quality and quantity. Even if you have to own a property or properties, it's better you go for the ones that are valuable assets and not the ones that are finished already. Because if you choose to go for these ones that are valuable, they are going to make you earn passive income which your money will be working for. you can be sleeping and be making money since their value keep on increasing . And you will have nothing to lose. But as for these ones that are finished already, their value will be depreciating which would lead to decrease in your income.