Why are friends offended if you don't want to drink?

I know. It is very true. Same thing about eating alot. For example if you are out to dinner and dont order a dessert. I think it is controlling. Most people who are controlling do that. I have found not to say anything like what you said ( I prob wont drink), but rather just go along with it, take a glass and then look like I take a sip and let the rest sit. Its just easier ( except once in a while there is the jerk who says' Oh you arent finishing your drink.!)