In general it seems easier to gain weight than lose it, which must be very frustrating for those people who try to lose weight but fail on the whole. Especially when they're called lazy, etc etc. In some cases that may be fair, in others it is absolutely not. Sadly it's all too easy to pre-judge about these things.
With respect to the OP, if it is true that there is a genetic origin to "binge eating" then it does seem important to know that -- while undoubtedly some will use it as an excuse, others will use it as a guide to knowing their problem and, hopefully, being more able to deal with it.