Firstly, the quality. For a long time, barista-prepared coffee had the upper hand, but this era is over. Machines can now provide high-quality taste, which is why you find more and more Michelin-Starred restaurants turning to machines.
Then there’s cost and quantity. The bottom line is that going each day to a coffee shop will cost you from £500 to more than £1,000 a year. (Assuming you only drink a cup a day.) For the same expense you can expect 40 times more coffee from a machine.