And I completely disagree with this. People claim that this is an example of good itemization, but I think the opposite. If your old gear never gets replaced, that means that the new gear is bad.
Furthermore, there needs to be a balance between how rare things are. When you ask for pieces that last forever, what some people call horizontal progression I suppose, the developers make these items hard to obtain (because once you reach the top, a loot game is basically over). And personally, I hate horizontal progression like this because it means that although the developers add new items to the game, we don’t get to actually play with them because they are so rare.
So, unlike the popular opinion here, power creep is a good thing for a game, because it means that we get new items regularly.
Concerns about “old content” being meaningless due to power creep is a non-issue imo. D3 partially addressed this with Torment levels, the part where it failed was when they didn’t make higher Torment levels drop better gear.