I don't really eat dairy as it makes me really snotty...haven't figured out quite why yet. I can handle small amounts of butter and goats/sheeps cheese but no more than that.
The only thing I really miss is greek yoghurt - absolutely love the stuff. Every now and again I give in and buy some, but boy do I pay for it...snotty and bunged up for days. And the more time goes by the more I notice it.
As someone who used to eat a tonne of dairy - yoghurt, cheese, milk - you name it, I can't believe that I probably always felt like that but I was so used to it I didn't notice. These days it's just not worth it - I'd rather be able to breathe, thanks :-)