Offering Bitcoin as the only deposit option will provide you with a number of competitive advantages, like the lack of investment fund license requirements, significant savings on license application costs and monthly fees, not subject to taxation or even taxable in many countries, faster time to the market, high member loyalty and most important for your own financial safety and privacy, complete anonymity for the members. Bitcoin is also fast, secure and modern way of doing business. Last but not least, nobody can ever limit the money flowing in and out, no matter what new regulations the bankrupt governments around the Globe might come up with. Safety is everything so in Bitcoin we trust!