There’s nothing irrational about it.
I’m not a traveler. I have maybe a 10 mile radius (and that’s being generous) I like to live in, and I get a little stressed out when I have to leave it for some reason or other. It’s not that I dislike stuff that is different, it’s that I vastly prefer stuff that is familiar. If I encounter someone or something new in my normal range, I get curious and am likely to be quite friendly and even helpful. But being in an entire land full of different stuff…no.
I enjoy travelling but can’t manage much of it now as I’m not in good health these days.
I’m not officially retired - only almost 35 years old - but I hope to get my health back so I can work more.