I encourage you to use my third party stories to make your point about purchasing a vacation home.There is nothing more powerful than showing why others choose to make property purchases especially when their motivation is the time spend with family.
A young women , who is a client of mine, and I were talking shortly after her closing on a townhouse condominium (purchased as a vacation home). We got on the subject of college savings for our children, she told me this purchase was made instead of a college savings plan, after my initial shock she told me why. My client had paid for her own tuition to an Ivy League school where she studied law, she commented on the other students she met while in school and said the ones whose parents paid for their education fooled around didn't study much and a few had to take their bar exam several times- some never passing to practice law. In her mind the time she had with her childern now was much more important than saving for their education, and in fact they too would get more out of it if they had to pay for school. This was not a case of tough love though, this was truely her desire to spend time doing recreational family things together. These memories she reasoned would be more important than working the extra hours so she could write checks to a college years from now. The time in the Car, on the slopes or hiking in the woods would be better for her childern than asking mom do you have to work late again today?
Our time together as parent & child is short and there are many lessons we can teach our children (one of those shouldn't be work is more important than them) but if we don't take the time to be together someone else is going to teach our children things we may not approve of. So take the time and don't worry about the money, you'll find away, and your kids will follow their calling what ever it is (mine wants to be a rock star!).