While there are many advantages to a vegetarian diet, there are also disadvantages. Most restaurants have very little if any vegetarian options on their menu. Practically none offer many vegetarian entrees. Close diet monitoring is important. You must make sure you get a good variety of items in your diet, especially things that are high in protein.
Many organic products are hard to find.
When they can be found they tend to be expensive because the current demands for them is not very high. Politically, vegetarianism is very left wing and not very popular is mainstream society. It is often frowned upon as if vegetarians are doing something others are not even though there is very little in a vegetarian diet that is not also in a meat inclusive diet. This is due, I think, in large part to the unfounded idea that vegetarianism is associated with radicalism. Some of the spin-off concepts of the vegetarian diet are the vegan diet and the fruitiverous diet.