That's just nonsense! You should turn the tables on them and make fun of them for wanting to go on vacation to sit on the beach all day and get skin cancer!

How boring!
Particularly when you can go to four different theme parks, two different water parks, excellent restaurants (including a 5-diamond one!), great spas, drive a race car, go to a Cirque du Soleil show, etc. all at one place...WDW!
DH and I spent his entire 18-day R&R at WDW for our wedding/honeymoon. He got teased somewhat about it, but he just fires back about all the fun we had and starts listing the restaurants, etc. Then people get a little jealous and shut up real quick!
And if you want a different perspective...we lived in Germany for 6 years, so we've travelled all over Europe. It's beautiful...yes. But, to see any significant part of it, you have to hop around quite a bit. And that's not relaxing at all! The only vacation we've taken that's even come close to the relaxing and fun time we spent at Disney is a Med Cruise (Greece and Turkey). It was a great way to see those parts of the world, but the food is better at WDW!