The government chose to interpret a single sentence 'Should the UK remain a member of the EU or leave the EU?' and translate that into 'Britain has voted to leave not only the EU but the single market and carry out the hardest possible Brexit'. This despite even the Leave campaigners repeatedly hammering home before the vote that in no way would a Brexit mean leaving the single market. They also spent 9 months making an enormous mess of things, sending mixed messages to everyone before deciding on hard Brexit, and offending and insulting the same European countries they insist they want to remain friends with.
Why would food imports be cheaper, when the value of the pound has fallen dramatically? We can still have immigration, but we've just made the country far less attractive to prospective immigrants. We can get back fishing grounds, that were drastically overfarmed in the past by us, and incidentally lose our rights to vote in other EU countries grounds. We won't pay a massive surplus into the EU, and we'll lose our tariff free access to the single market as a result. We can trade outside the EU, just like we already can, but for some reason appear to have chosen not to. Germany for instance have twice as much trade with India as we do. Why is that if the EU is such a barrier to outside trade?
It just feels like the country has done something so outrageously stupid that there really isn't a bright light waiting at the end of the tunnel.