RVs are more like cars than homes in that they depreciate over time rather than appreciate. One big problem though is the cost which is more like a home than a car. Because of this banks and dealers offer longer term financing, but it is quite possible that the buyer will be underwater on the RV purchase. If you're planning on keeping it for a long time, taking care of it, trading before paying off or paying it off early then being underwater may not be a big issue. But being underwater can be a big risk if you ever get into a financial bind and have to get out from under the loan.
Personally I like to try and keep from being underwater on my RV purchases which generally means making a bigger downpayment, financing for a shorter period of time and paying it off early.
