I suppose that's a deeper question of why do anything different at all if your current set of things results in your happiness?

Aside from practical limitations, health, economic prosperity, I'm of the opinion that there's value in staying compelling by exploring your curiosities instead of dismissing them in favour of protecting your current happiness. In order to have resilient connections with others, you need to find ways to stay attractive over time, and it's a consequence of doing new things from time to time, travel maybe being one of them.