Well i start using bitcoins because besides i be able to earn them for free, i can pay several things online for my projects as well hire developers, and i can buy almost anything online, only need to find a trusted place as well seller, besides that i do love and support bitcoin.
yeah maybe the reason you joined when it could have made a lot of people are interested in you can say that using bitcoin as a payment method will be easier, faster, cheaper than you're using another payment method such as PayPal?