This is a great thread. I'm really enjoying reading what people who think like me and who don't think like me have to say about the subject.
In our family, whether we travel or not is up to me. Dh is generally up to whatever I want to do and has never said no to my suggestions. (Example: Our first cruise. My idea) Even when it meant I wanted to travel alone or with one or any of the kids while he stayed home to work, he's agreed to it. Having a spouse who will not tell me"no" puts a dangerous amount of power to be reckless in my hands. I guess one of the reasons he married me is because I'm not subject to whims or to abusing his trust or generosity.
That being said, nothing-not food, books, wine, furniture, clothes, hobbies, etc.- tempts me like the opportunity to travel. I'm definitely in the camp of "out of sight, out of mind". Groupons are the worst. Those gorgeous pictures and cut-rate deals make me want to run for my credit card. So do the cruise sale brochures that come in the mail. Anymore, I delete the unopened emails and drop the brochures in the recycling bin near the mail box.
For me, the most effective way to keep the urge at bay is planning a trip that's a long way off. What also takes the edge off is the fact that dh and I agree that all vacations are actually paid for before we take them. Charging a trip on a credit card that we will be paying off for months or years after the fact is not an option. I can't enjoy what I can't afford. It's just the way I was raised.