Travel is many things to many people. Your children may look back on their trip with a greater understanding of things, maybe things as diverse and important as Monet's watercolors in a museum looking a lot like the real Paris, or the realization that the teeter-totters in Germany are a lot like those at home.
Bridges between people have been built out of a lot less.
And there you have it. The roof will likely last another year. You can replace the car another summer. Take the kids with you. Do it. Take the trip.
Thanks for reading.
Immigration and Customs
Just a few more details to deal with before you're home.