I've also considered becoming a vegan. However, a doctor who I've recently visited, told me that I should seriously reconsider my diet. According to him, I am not getting enough nutrients. In fact, there was a reason why I've visited him in the first place (he's a gynecologist). I am not sure if this doctor is actually right about it, but he scared me quite a bit.
We are all different, of course. So the diet might work for some, if done right. Anyway, right now I took a step back and trying to figure out what works best for me.