I don't know you so I can't really say why this site interests you like it does. I can make a guess however, based on my own experience.
Personally, I have a fascination with being self-sufficient and producing most of my own food would be a giant step in that direction. As I have come to understand how bad the food supply system is in this country (its downright nasty) I have begun a quest for more control over what my family and I eat, among many other things I wish to better control. I have only recently started down this path (its hard to raise a lot of your own food when you live in a master planned community with deed restrictions out the wahzoo in the suburbs of one of America's largets cities).
So even though you don't eat meat, perhaps you enjoy seeing the freedom that the people on this site enjoy. The freedom that comes from being at least a little bit self-sufficient. Perhaps you enjoy watching a movement, if you will, develop before your eyes. Not a "movement" such as anything organized, but a movement of trends away from the non-nutritious, tasteless and sometimes deadly toxic food that comes from that neighborhood farm known as a grocery store. Not having to eat from the trough of the USDA, Tyson Foods, Cargill and ADM has to be an exhilarating feeling.
I don't know why you don't eat meat, nor do I want to know or need to know, but if the reasons have anything to do with hormones, antibiotics, pesticides, herbicides, fecal matter, e-coli, salmonella, and the horrible conditions under which our meat lived before it died, raising your own food without all that is a completely different thing.
I'm still an omnivore, but if it weren't for the knowledge that I can raise my own food, I might soon join you in the vegatarian realm. Since we do live in the city, we have started buying our meat from "natural" growers via a food co-op. That will have to do for now. I am also going to raise some laying hens in a coop in my backyard and see how long that lasts before the owner's association threatens to kill me or whatever. Meanwhile my wife and I are formulating plans for our "escape" to a more rural environment at which point we will be better able to "opt out" of the current system.
Dennis