Anyone dealing with an alcoholic must remember they are not dealing with a sane, rational person. They are dealing with a very sick person and should not take things personally/not take things to heart.
Yes, can be very difficult to do. Easier said than done. I myself took things to heart, until I got educated about the dynamics of alcoholism.
Maybe the alcoholic does suffer, but you must decide if everyone else around the alcoholic must suffer also.
Alcohol is THE WORLD, UNIVERSE, and GALAXY for them. We are just people that assist in helping them maintain that lifestyle.