How often do you buy new trailer?

Let's see... Growing up we started with an old Coleman PUP that was too small, so a couple of years later in 1993 we bought a '94 Coleman Sequoia PUP that we traveled all over the country with many times. Then in '96 we bought an Aerolite 25RB that became our Christmas home for Key West. In '99 or so we got a 28ft Holiday Rambler, which was sold in 2004.

It goes on, but it seems like 3-4 years for my family. Our current unit is 2 years old now, but we're trying to hold out for at least 5 when we'll be sure how many kids we'll have.