The people calling you sad might be projection their own sadness on you. Alcohol is known as a really addictive substance as well even though it is socially accepted. Those who drink regularly for effect rather than just on occasion for taste usually are covering up some issue of their own. Just remember to use only to maintain focus and a healthy life. If you find yourself needing to increase or rely on it then you likely should consider taking a break for a few weeks just to remind yourself what you actually are trying to accomplish with the use as well as the difference between beneficial effects of use and pleasurable effects from use, which the later shouldn't be present really for sustained use to maintain.
Hope you're doing well!
Hope you're doing well!