Lactose Intolerant

It's a major league no-no from me —
Milk, cream, butter, cheese, yoghurt, dairy;
Fully cooked into a main meal not so bad,
But in raw form, unadulterated, very sad.

At school, foul full-fat milk, warm to touch/taste;
Hols, finest Orkney cheddar gone to waste;
Moussaka, quiche; buttery/creamy curry,
To toilet or sink basin made me scurry.

Over time it got worse, immuno-allergy
System working like saboteur against me.
Trifle, apple pie with cream; not a gleam
Of pleasure in my eyes; take one for the team,
Only to be violently sick later?
Dear reader, I became a dairy hater.