What a one way street that posses indeed as a two way, to the system, multiple daily transactions from gamblers helps the Blockchain technology grow. So, on a general ground it's helping the system, but on an individual status, gambling is detrimental to personal portfolios and most players I've read that gambled with Bitcoin regrets it, because it's an appreciating money. Except that, players who gamble with fiat also feel the effect of losing money. Hence, gambling is a trap, not just for the Bitcoin players alone, the mental approach to it is what determines what it's like for any gambler.
Why do you think Bitcoin will constantly grow in price? Well, where did you get this idea from? At the moment, let's face it, it is nothing more than a speculative instrument. To be convinced of this, it is enough to look at its history on the chart. You will see a fall that has thrown many large investors off track. You should not be so sure of anything. It is better to consider all scenarios, and not to indulge in public opinion.