'so long as the animal doesn't suffer I don't see the issue'
That is my biggest issue! The animals do suffer more often than not!
I have only recently become a vegan.. I never in a million years expected that I ever would! I wanted to become a vegetarian, or at least only eat meat that I had personal responsibility for the welfare of (knowing this would drastically reduce my meat consumption, and I have long believed that if we are meant to eat meat, it is certainly only in small quantities!)
The reason I chose to stop supporting the dairy trade is because having looked into it, I realised what a cruel, unnatural, industry it really is. Milk is only produced by cows for calves and those calves are more generally denied their mothers milk, and indeed comfort (the basic right of any living creature!)
If having your new born baby taken away from you is not suffering I don't know what is!
Sorry, I know this is about meat, but I feel that dairy comes into the same category (animal exploitation).