I think there comes a time in every photographer's life there is a slow down and we all need to take a break. A lot of us have experience it before.
Giving up shooting might not be a bad idea. But one thing I know, a lot of people who gave up this hobby will eventually come back to it after a period of time. How long ? It depends on individual.
I gave up before for 3 years and then the interest came back. Why ? I think Clubsnap has a lot to do with it.
Anyway, there is no right or wrong decision here, only the best decision you feel its right for you.