A boot jack is an item which you do not see regularly in a European home. You do not need them with most shoes so I can understand why. If do have a couple of boots, you can use a boot jack for sure. Just place your heel between the jack, step on the other side with your other foot and pull off your boots.
This stylish wooden example, out of the LTD Store of Rats, is a limited edition that is hand made in Japan. This item looks so good, I would buy it even when I only walked barefoot. Too bad it is already sold out. It is their second limited edition so I expect it will not be the last. Hopefully the next is all black cherry wood.