This topic comes up fairly frequently and it is especially prevalent amongst DVC owners since we go more than most. I just don't discuss it at work, there are no DVC members or even very many who have ever been to WDW. I agree with others that have mentioned the fact that no one bats an eye when people got to the same beach, the same resort on the same week every year, how is that any different than people who go to Disney every year? I guess it is just less common.
I will be going 4 times in 17 months so if anyone at work asks, I'm going to stay at our timeshare!