Well, i personally think every human does have some type of addiction they are battling with, the truth is that addiction does not end at being addicted to gambling, there is the..
Drug addiction
Alcohol addiction
Sex addiction
Porn addiction which also leads to being addicted to masturbation
Movie addiction
Phone addiction ETC.

All the above are different types of addictions, some people today are addicted to their smart phones without even knowing, some are addicted to watching movies and they don't even know it, so in one way or the other, every human is addicted or have a very high chance of being addicted to some thing that is totally outside or not related to gambling, and it takes great discipline to keep one away from any of those addictions.