Plant based diets aren't literally only eating plants. Fruits, vegetables, nuts and legumes, whole grains etc. It basically just means a diet without animal products.
I'm considering going towards it myself, except keeping fish. Meat just isn't necessary. It's not generally good for us, and it's absolutely terrible for the planet.
Hi, welcome to Crohn's disease. The majority of us don't do well with even small amounts of vegetables. Judging from the apple that flew through me in 4 hours I'd say your diet would eventually kill me or at least result in multiple hospitalizations. Then there was that radish that plugged my ileum that was fun.
In other words: We are not one size fits all. What's good for you may be terrible for me. Vegan from college had to go to eating meat because of a completely different disease that has nothing to do with digestion.
Likewise I know people who do better without meat.
So why is there a need to claim what we as individuals do is what everyone must do?
Unless you eat rocks "a plant based diet devoid of animal products" is about eating everything you list unless there is some new category of things suitable to be food I haven't been told about. Unless you're talking some lab grown meat, which as far as I know is not there yet, but as meat I would class that as animal it was just never alive.
As for the planet, let me guess, it takes 400000000000000000000000000000 gallons of water to produce one pound of meat and that's supposed to be bad. Yet it takes the same 400000000000000000000000000000 gallons of water to produce the 10 pounds of plant matter you need to eat to replace that pound of meat but that's good.
Guess what, you're drinking dinosaur urine. They weighed a lot more than a cow does and that water does not get replaced in our ecosystem. The wheels on the bus go round and round.
And can't forget about cow farts. Because vegans aren't just as gassy. And that plant matter rotting in any other way doesn't produce the exact same gasses.
. In all seriousness, 
