Many gamblers use bitcoin because their countries banned gambling and their are also countries that limit the amount gambled. Rich people travel overseas and there are some that use crypto currencies specifically bitcoin. Speaking about the present dump on bitcoin prices obviously affect these gamblers. Take for instance a gambler's 1 million dollars is now worth only $700,000. No one will be happy on this devaluation of assets. Except for gamblers that also believe in bitcoin and its long term potential.