Using items stat bonuses to equip other items

This is a game mechanic that has been around forever, but frankly makes no sense.

An item has a minimum stat requirement, you equip an item(s) that gets you to that minimum requirement, you put on the item you actually want to equip, you remove the item(s) and then your stats are lower than the minimum requirement, but the desired item remains equipped.

I think in this case the item should remain equipped, but the stats/bonuses the items provide shouldn't be applied.