I'm not against it, but I have no interest in eliminating animal products. All those vegan movies and documentaries are backed by vegans, the studies are cherry picked in there favor.
All the studies that specifically link meat to cancers and heart disease are also financially backed by Peta and vegan organizations.
I definitely eat tons of fruits and vegetables, but I eat my meat and dairy too.
I have 3 very close friends that went vegan and all of them lost a ton of weight, but they also have very little muscle and are not very strong either.
You absolutely can make a vegan diet work to build muscle and loose fat and have high performance, but it's much more challenging then someone who doesn't have to eliminate whole food groups. There's a few vitamin deficiencies you should keep a eye on and combine multiple plant based protein sources at every meal to make sure you're getting all your essential amino acids, and count your calories, it's very easy to under eat on a vegan diet because so many of the foods are not calorically dense yet filling.
I don't think your going to find more then 2-3 vegans on this forum tho so I wouldn't expect a lot of responses