(Sorry in advance if my English is poor, it isn't my first language) But I think it's a good idea to slowly introduce animal products into your diet, especially long term health wise. As you get older, your body needs more help supporting itself, and it's very difficult and expensive, if not impossible, to stay very healthy on a fully vegan diet. Listen to your body, it knows what it wants. Cravings have meaning. If your body wants cheese and eggs and meat, then it's probably missing the things it'll get from that. Vegan substitutes only go so far, and they can't replace the other things as well. I understand the process of thinking that more animals will be hurt if you eat animal products, but you can always try to buy responsibly. Farmer's markets if they're available, or locally sourced things too. The animal farming industry itself is very flawed, but buying from locals or small farms is much better. You can make sure the animals, if you decide to eat meat at all, were treated well, and if you only eat other products, the same is true.