I was raised vegan (dad is/was a raw foodist/purist type of guy) and later on drew away from that and just became a regular vegetarian. However, growing up I was pretty adamant about not being vegetarian once I was out from under my parent's rule; that never happened simply because of the health implications that go along with eating meat, and to an extent the ethical reasoning.
You can watch this for something a little more in-depth, more than I really have the time to explain at 11 PM, however, ignore the parts about cholesterol, as cholesterol was proven early 2015 as no longer a risk factor for heart disease.
E: Should also probably preface this with saying that McDougall is a bit oldschool, some of the information he'll give may be a bit dated and such (such as him being wrong on cholesterol, but I wouldn't entirely fault him for that since 99% of the medical industry is oblivious to the truth on it anyways, but the health realities and principles are still true).
For those curious as to why I say that about cholesterol
http://www.ajcd.us/files/ajcd0007056.pdf (source material)
McDougall does a great job of providing you reasoning either to severely limit your meat intake, or just cut it out altogether. If your worry is that you'll limit options after eliminating meat, give it a try and actually
look for non-meat options for meals. The single question I always get is "well...
what do you eat?" and I always give them the simple answer of 'anything that isn't meat.' It's not difficult tbh, some people dive right into the meat alternatives and it puts them off because there are maaaaaaaany many many out there that taste like shit lol (mainly the vegan ones, since vegan diets and people who are vegans, and their companies, are usually a bit more extreme/plain/pure in ingredients).
My sister a year or two decided to go vegan and she struggled with it, but adjusted after finding new things to do for herself.
Lastly, how far you take it and how strictly you actually stick to your diet will determine how well you feel. I've known several people that tried and ended up hating it because they were stuck in their "uhhhhh" phase of not knowing what to do for themselves.