I've never understood why people smoke, its a disgusting habbit and i cant see anything positive thats comes from smoking. Any ideas why so many people do it??

We all know fast food doesn't do us health wise much good but every now and then the odd treat of a takeaway cant be too bad but which one do you choose the most often ? in my family we normally vote or take it in turns to pick where we order from though there are still grumbles when the choice is made maybe there are just too many to choose from ? so do you opt for curry's Chinese the english favorite fish and chips or burger bars ?