Earlier quoted context omitted.
"Penalty", yeah because people have put in sooo much hard work to make their house values go up. (Sure, some people will spend money on renovations, and there could be tax credits for that. But I don't think that sitting on an asset and letting it appreciate should be a free lunch.)
"Penalty" because someone who sells their house and buys a new one every time it appreciates $250k pays zero tax whereas someone who buys and holds pays significant tax despite having the same net gain over the same time period.
https://www.irs.gov/publications/p523/ar02.html#en_US_2015_p...