There are many types of plant-based milk and you can find several plant-based yogurts - but what about ice cream or butter? It's a bit more complicated ... Anyway there are still many options to replace these products.
When I started limiting dairy in my diet, cheese and yogurt were the biggest problem. I used to love them and I had no idea what am I gonna eat instead. Now, few months later I don't crave them at all but if I did I would know how to replace them :)
I was thinking about giving up dairy for a long time - from ethical and also health reasons. But it was too hard for me. As a kid I used to be cheese lover - feta, mozarella, blue cheese - I used to love all of them. Also I used to have yogurt for breakfast almost every morning. And giving up ice cream, sour cream, butter, the food that used to be a part of my daily diet plan ? That seemed absolutely impossible for me. On the other hand I began to realize more and more reasons to actually give up dairy. Right now I limit my dairy consumption to minimum - I gave it up almost completely, I just had some weak moments when I ate something containing dairy. But moreover I wasn't only able to give up dairy - I don't even MISS it at all.