I can not say that invention is my hobby, but I am fond of inventing. To create something new is wonderful. To observe with the internal eyes how the different theories, thoughts, details struggle with each other and something new and purposeful is created which gets life and moves , isn't it a real victory. It is victory of human mind and intuition over the chaos.
I started inventing from my early childhood (who has not tried to dismantle different toys and collect something new?) By the way a child's mind is more creative and smart. The child is very sensitive towards his surrounding; his attention is not overburdened with the "values" of the material world. For me being an inventor means to feel the surrounding world, to observe the minute nuances and inter-relation of all surrounding us.
I also like to study old technologies, they are ingeniously simple. Most of these technologies are wanted and actual even today.