I’ve travelled every way possible, and I’ve learned you need only two things (besides good health): some time and money.
Here is what I learned from 40 years of traveling: Of the two modes, it is far better to have more time than money.
When you have abundant time you can get closer to core of a place. You can hang around and see what really happens. You can meet a wider variety of people. You can slow down until the hour that the secret vault is opened. You have enough time to learn some new words, to understand what the real prices are, to wait out the weather, to get to that place that takes a week in a jeep.
Money is an attempt to buy time, but it rarely is able to buy any of the above.