I like flowers. My wife loves them too. I usually bring them when I come home from office. Gerbera's are most commonly available flowers in Mumbai.
As far as I cam remember, my first move to explore the camera was also because I wanted to get a better picture of a Gerbera.
There are quite a few varieties of Gerbera.
And the final thing that I like about flowers is that they stay still. I can setup my camera, test different settings and experiment.