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No it isn't. Waiting on confirmations? Transaction fees? Fuck that, it takes 12 seconds to give cash and get change back. Even less if you have the exact amount. Plus you have to go and buy bitcoin to begin with. Not at all more convenient.
Though what you mentioned are all valid issues bitcoin is facing right now that is holding adoption and price hike back, the topic is the effect of japan's move to bitcoin. Making bitcoin legal in Japan opens a lot of opportunity for bitcoin users and maybe even other cryptocurrencies. Japan will be the model for other countries and if it becomes successful in Japan, other countries may follow and will make bitcoin grow more on price.
Absolutely Japan making bitcoin legal in their country open a lot of opportunities to us. Now I'm thinking of buying items from Japan and paying with my bitcoin.
Or we can sell something that Japanese people want and they pay us with their bitcoin.
Although for me the Japan effect on the price of bitcoin will be only felt long term. Its barely a month since making it legal so we still need to see how the price will move in 6 months time. Japan is setting a precedence, and I hope other country will follow what they have set regarding bitcoin adoption.