Nowadays, it is no longer necessary to use the boats and flying boats in the game : (
Maplestory used to have boats everywhere that took 5 10 and even 20 minutes to reach the destination. During that time you just sat on that screen and there was nothing to do unless there was another person there to talk to.

Boats and airships were kinda fun at the time, but the reality is you're really just standing on an island for 5-10 minutes. We figured that out, it was really just a deliberate inconvenience, considering instantaneous movement already existed in the form of teleports. Nobody likes waiting especially when the whole purpose is to make you wait.

In a way it is a shame, but I don't think you'll find a player of the game today that misses waiting several minutes to get to a place they want to be at right now. It's a fantasy game, there's no need to have realistic transportation.