I buzz my own hair off with some Remington clippers, and have done for ages. Also, I sit outside whenever I can so the birds clear it up for nesting material.
I use the 12mm attachment round the back & sides and 18mm or so on top. It's not difficult, and my wife trims the back of my neck when I've finished. I go over it all several times to make sure I get every bit of hair, especially on the crown. With three kids, hobbies & interests, a garden, a house and bikes to fettle and clean, I simply don't have the time to take an hour or two out of a Saturday to get my hair cut.
My wife & kids get their hair cut by a friend who visits. £25 or so for the four of them !