Shed - Ryanair were good enough for you when they were at MAN (22 sectors you say) and by your own admission, you'd book again if the price is right and it operates from MAN. In otherwords, all this is really about you being chessed off about them pulling services from your own personal favourite and showing committment to a regional rival. Hardly makes them unique in the airline business and I'm pretty sure the good people of Liverpool, Leeds or whereever could make many a similar claim about business that has gone the other way.
I wonder if you know how much of MAN's passenger traffic comes from a radius greater than the 50 miles you won't travel? I also wonder if you see the irony of the fact that you are able to book 27 flights from MAN in part because consumers behave in exactly the opposite way to you in response to airlines doing exactly the same thing Ryanair are doing (albeit less publically, but doing it nonetheless).