Most of us just have a hesitation on bitcoin acceptance worldwide, but I'm sure in another one or two years bitcoin would definitely accepted worldwide for all the transactions and it is going in the right track towards that. Always there's a negativity created for a good transformation and the good thing would burn all the negativity once it comes live beating the blues. We need to just wait for a while to transact in bitcoin for all purpose. 
I think you are being too optimistic about the acceptance of bitcoin. Yes, bitcoin is booming today but does that chance the fact that there will be countries that are against it? ICOs are banned in US and China and those are very powerful countries. One to two years is such a small span for this big growth. We are just around a million users and that's nowhere near 1% of the total population. How can you expect that to blow up enough that the whole world is going to accept bitcoin and all the countries not accepting it will start to embrace it, in a span of one or two years? Bitcoin is definitely accepted worldwide by now since there are users in different places but not everyone and definitely not for all the transactions that we are having. Fiat money is still covering 99% of our transactions and that's going to continue for a long time.
Bitcoin acceptance will definitely happen in most parts of the world, if not all. There are some countries that considered bitcoin as legal, you know.
The mass adoption won't happen from a day to another, so bitcoin still have time (and that time is really needed) to come up with the developments to cut the fees and speed up the transactions. This is why most of the people are waiting for the lightning network to go live, and that needs time because despite of that tests on the testnet was done and was successfull, it needs further testing before using it on the main net... There's no sense to start something when it's only half-done, so we have time to wait until tests are done and we can start using it.People are starting to think that lightning network is a vaporware. Vaporware are just ideas that people can think about and it seems achievable but our current technology are just not yet enough to develop such.