Gambling can be a waste of time when the person involved isn't gambling responsibly but for gamblers who possess self control and fully regulate their gambling engagements, I don't think gambling is a waste of time. Responsible gamblers only engage in gambling during their leisure time and with a certain amount of money from their disposal income and because they're responsible in what they do, they also quit gambling when it's very necessary and wouldn't cause any form of regret. But when you gamble differently from what I explained about responsible gamblers, then you are very likely to be wasting time and money on gambling