It will surely be effective, even now I guess most of young generations prefer cashless transaction using e-money or digital wallet, at least in my country, that's the case. Especially there are a lot of e-money giving lots of promotion and such in my country, so people rarely use cash since they want discount and such. Although bitcoin doesn't give discount or something, but bitcoin surely is valuable and worth high, so i know that if bitcoin is becoming more common, more merchants accept bitcoin, there might be a lot of people going to use bitcoin later on. Even now, i never bring any cash anymore and only use e-money or digital wallet, although not bitcoin since it's not accepted in my country. But once it's accepted, i might use it as well.