One needs to look at the entire tax change and the net impact, not necessarily one or two deductions removed. I am definitely not well versed in the changes, but the elimination of the AMT and increases in the standard deduction helps offset some of the eliminated deductions. Additionally, don't forget, the value of the deduction is directly related to your tax bracket. So at a 39% tax bracket you are only realizing 39% of the deductible expense. I really don't think that deductions on luxury items such as boats and RV's changes one's buying habits. It makes the tax seem more palatable. If the difference between the sales tax and or interest deduction financially makes a difference between buying or not buying, then you probably shouldn't be buying in the first place. I could never figure out why people thought a tax write off on a large mortgage was great. If you save 39% on $10,000 that is $3,900 deduction. You can save $6,100 if you didn't have the interest payment in the first place. Granted, if you have to pay the interest the deduction is a bonus. However, my philosophy is you never borrow money for a depreciating item. Then again my philosophy. 😀