The human mind as I see it is one that isn’t accustomed to accept fault and take blames. Very few persons in our world has learnt to be the offender, to take the hit even when they are not fully convinced.
This is why drunks don't admit they're high on alcohol or addicts accept they're hooked. Rather they will do all to convince any accusing tongue that they're in perfect frame of mind and know what's going on around them. The day any of the two aforementioned admits something is wrong with them is the day their healing and recovery process actually begins.
If there are those that are able to manage their behavior around gambling and have no problem, why should we see gambling to be a problem other than ourselves to have problems with our behavior towards the gambling?
Humans are the problem, not gambling. With moderation, every gambling engagement looks and turns out right without hassles. Those who go overboard with their risk level and throw caution to the wind without heeding the warning on gambling sites not to risk more than they can endure should've themselves to blame when it goes sour.