Customers will only use bitcoins in paying your service or buying your goods when they are already using it. When they are paying you in the cashier and you introduced bitcoin to them, of course they will not grab their phone and do research about it. They would simply say 'no' to you and then carry on to their day. If you're lucky and that customer happened to have a lot of spare time, then maybe the next time he comes to your shop, he already knows about bitcoin and use it as a payment.
Bitcoin can be used for many different ways,and which is best suited for a particular individual he can use it for that.While if some one wants to send money online over the world with so less fees then he can use it for that,or being anonymous or wants to gamble online bitcoin can be used .
I think for now, the biggest benefit we have in bitcoin is we can gamble easy, unlike before that most of the gambling sites require us to put a bigger amount of deposit before we can start to gamble, with bitcoin even small satoshi you can gamble easily and we can protect our identity here.