Why is it necessary to make plans in advance?

It can save the waste of time and use our limited time more effectively. We always have limited time when we do something so we can tell what to do or not by making plans. It’s also predictable rather than not making plans when something happened suddenly. We can’t know about it if we don’t prepare. Therefore, I always make plans before that. Especially, I tend to prepare for travel in advance. I’ve been somewhere without specific plans in Korea. I just spent my time as time went by. I was regretful after arriving at my home. I couldn’t visit famous spaces and restaurants near my hotel and there was little to be able to do because I didn’t know about it well before. I decided to make plans in advance after that day.