ok, well having read all your replies maybe i should clear up something:
the course I am actually doing is computer studies with artificial intelligence, so it would be a specialised course and i was thinking of going into research or something afterwards. However my other big idea was to go into consultancy. This is where my doubts for the actual usefulness comes into it.
just to make matters even worse, yesterday i was sitting in the kitchen trying not to be miserable because im annoying myself now; and some guy in my flat's parents came in and i got talking to his dad who is a high powered IT consultant who does have a degree, although its in mechanical engineering and he said to me that there is absolutely no need for a degree to get into that line of work. He said how it's true that it will give you a headstart and less pay to begin with, but minus the 3 years and the debt of uni and theres not much benefits to a degree.
To be honest im seriously considering trying to find a job while im here and if i could get one then drop out... my family would be completely dissapointed and probably ashamed but as grateful as i am to them for getting me to this point in life and the support theyve given i dont want to potentially waste my time and their money.