I've been plant based/vegan for close to 2 years now. So I don't eat any meat, dairy, eggs, fish, etc. Nothing from an animal. I have only seen improvements from doing so. Getting enough amino acids is not an issue so long as you eat enough food, and include things like legumes, whole grains, nuts, seeds, etc. I get around 160 grams of protein a day from eating these things. You can watch this video for an explanation using scientific literature showing that plant foods contain all the essential amino acids: The Protein-Combining Myth | NutritionFacts.org.

You would also still be eating things like dairy and eggs, and you say possibly even fish. So long as you ate enough calories you should have no issues.

For anyone wondering why I went plant based, I did so after watching this video: Dr. Michael Greger: "How Not To Die" | Talks at Google - YouTube