Welcome to the forum, Robert.
Several of the popular vegan documentaries I've watched would say otherwise. Vegans seem to statistically live longer than vegetarians, according to their studies. I am referring to docs like Forks over Knives, Eating You Alive, What The health, etc. Whether or not that is a marginal difference would depend of the diet itself.
The fact that vegetarians and vegans, alike, can eat unhealthy diets full of processed vegan foods, oils, and other saturated fats, would suggest the statistic of longevity is somewhat subjective, and dependent on diet specifics....not to mention genetics can play a huge role. For example, my dad lived to 94 on mainly a pescatorian diet, and 2-3 packs of cigarettes a day. Go figure. He drank a fair bit as well.
If you need convincing about the dangers of dairy and eggs in your diet, I suggest browsing through
NutritionFacts.org for info on them, specifically. This information alone was enough for me to go vegan as apposed to vegetarian, but the ethical aspect of it is overwhelming as well, in my humble opinion.
If you do want more convincing of the ethical aspect of veganism, maybe try watching "Earthlings" on YouTube. It is enlightening, to say the least.
One of my best friends is a vegetarian, as well as my nephew and his wife. They would debate this until they're blue in the face, on why they should continue eating dairy and eggs. If I provide them a study on the hazards, they will throw one back at me on the alleged benefits. Weeding through all the information out there can definitely be a challenge.
By the way, if you haven't watched these above mentioned documentaries, I highly suggest you do. They are well researched and backed up with research studies and science. I'm not sure where you were reading your "convincing reports" but just remember this, the truth is out there...You just need to weed through all the misinformation to find it. I'm not saying your sources were bad, but the truth is there is way more misinformation out there than truth. We've been fooled by the agriculture industry and TV for too long.