Well, taxes also don't automatically get removed from your bank account either...
It would be the same if Bitcoin became universally used. Governments would just accept payment in Bitcoin, but you would be responsible for making those payments and reporting your income etc.
Also, isn't it nice that they have this big ledger (blockchain) to see what kind of income you have received.
Right. But I hope that there won't be taxes and such so that bitcoin will be very useful to all. There will be no hassle on paying. And lastly, our land will be bountiful.