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It doesn't annoy me, unless it's hurting others. Food, for example, is sometimes inextricably linked to people's happiness and sharing it with others acts as a social cohesive to strengthen and maintain relationships. It can be incredibly difficult to stop eating unhealthily for those reasons. Drugs are different in that while they may be tied to somebody's happiness, they usually deteriorate relationships and have a negative affect on those around the user. That's when it becomes troublesome.

However, many people who you think do not want to change desperately do but their state of mind, usually depression, is holding them back. It can be incredibly confusing to have an ambitious personality but absolutely no desire to act upon those ambitions, such as going to the gym and staying in shape. Lazy does not always mean lazy. It may mean a determined soul that has given up.