Legal drugs, illicit drugs, alcohol, sex, gambling, internet, eating disorders?
Nobody needs to tell you that addictions are bad. You already know that any kind of addiction can ruin lives: health, families, relationships, etc. and it can all end very badly.
And yet you keep coming back because you want/need to get what it has to give. The future is later, need is now. Go to any kind of 12-step program meeting and the overwhelming emotional theme is desperation.
Addictions tend to run in families. Did you get this from your parents? Do some of your relatives have feelings that need some kind of self-medication?