Why does my honey always crystallized?
That's normal for honey. When you buy good quality honey, it will always crystalize, no matter what you do. The speed and crystalization and the appearance of the crystals depends on the plant from which the honey was made.
If you want honey that doesn't crystalize, you can go to the supermarket and look at the cheaper honeys. If they are liquid in the supermarket already, there is a good chance that they have been treated in ways which prevent crystalization. Alternatively, you can buy products which are a mixture of bee honey and other sugars, which can also be formulated to not crystalize.