How long do you keep your full time RV

We are going into our 9th season with our current 5th wheel and the previous trailer was 6 years old when we traded it , have had the normal amount of issues such as replacement of battery charger convertor, replaced the tires and they are due again the fridge door broke off the hinge and little items from use. It takes a few years in my opinion the get everything the way you want it and add the things you want. we are currently looking into downsizing to a truck slide in camper since we will be doing more traveling in the next year or so and a 35 footer or in your case a 38 footer is better suited for longer stays in one place like we have been doing. we currently stay in the same parks for three weeks at a time and our fifth wheel has been great for that use, I think no matter what brand you purchase you will have something break at some point but the up scale full time rated brands (make sure what you by has a warranty for full time use many are not so read the fine print )seem to avoid the big issues such as frames and wall cracks and roof issues . You can have problems with just about any brand when it comes to the equipment installed in the trailer because they all use the same brands . good luck with your adventure and safe travels
mike