For me bushcraft is primarily a method of keeping me comfortable outdoors. Over the years I've spent a lot of time in a variety of extremely hot, cold and temperate environments and I've managed to remain reasonably well fed and watered with minimal impact upon the surrounding environment.
Nowadays I enjoy nature, getting out and about and nothing enhances that experience for me better than collecting edible food to prepare and eat.
For example, a beach trip with the kids on the west of Scotland earlier this week, prime quality mussels and some seaweed gathered, firewood collected and a fire lit on the beach upon which the shellfish were cooked. Afterwards, tea brewed before leaving for home. For me this is the essence of what I call bushcraft.