A smart, well informed plant based diet it 'probably' the healthiest choice
for just about any reason that comes to my mind.
There is just too much evidence and literature (medical or otherwise) to
support this or ignore it.
Not getting enough protein (and bodybuilders love there protein . . .
to a fault in my opinion) is a huge myth. You can get all your need
on a plant based diet and there are so many other health advantages,
too numerous to mention.
Of course I am biased . . . my wife is a vegan, healthiest person
I know. Fantastic endurance and strength. But she works at it
(nutrition and exercise) just like any serious bodybuilder does so
so it is a wash there in my opinion.
I am close, 95% there. I still love my fresh eggs with a small amount
of meat being ingredient in a meal, not an individual serving and
only occasionally mostly because I like certain dishes so partake with
zero guilt.
Hunger has never been an issue for me or my wife. I swear she lives on
air and water . . . and planet's. I only eat 2x per day with my biggest meal
being breakfast between 10 and 11am. Dinner 5 - 6pm, nothing after that.
And I typically eat what she eats.
The other concern people seem to have is getting enough total calories.
I am not qualified to speak to this directly as it is very individual but will say
that most so called bodybuilders eat way too much, get too fat only to have
to lose it at some point if they want to look good and be healthy. (A very
debatable subject / process.)
I think there is a website called nomeatathlete. May be worth checking out
if you are interesting in going in that direction.
I hope you achieve your goals whatever they may be.