They have been. Every (legal to own/possess) purchase has been taxed. Many of those are taxed year after year, the entire time they have been owned. 

Property owned and inherited has either been taxed every year (real estate, vehicles) or they were bought, taxed, and then cared for.

Trump plans to reward those who *pay in* taxes and do not receive *more back* in tax credit refunds. More $$$ than they actually ever paid in. 

Finally.