The longer you get away with it the harder it is to change, as it becomes ingrained to think 'well I didn't follow the rules and nothing bad happened so I can continue as before'
To be perfectly honest, you probably will get away with it for a while. It is very rare for any diabetic to get complications in the first five years or so following diagnosis. The highest risk factor for retinopathy is not the Hba1c but the length of time someone has had diabetes. But as there's nothing anyone can do about that, the hba1c and other controllable things, like blood pressure are the ones they focus on.
The problem I found was that I had got away with it for so long that it was nigh on impossible to change without something life shattering happening - in my case pregnancy (my eyes only got really bad after my pregnancy, very common). Suddenly I was faced with the prospect of losing my baby (as it was an unplanned preganncy and I was not well controlled) which was the worst possible thing that could have happened to me at that time,although not planned the baby was very much wanted, and I began to take things very seriously. Also, being pregnant, I did get a lot of help from the medical staff such as being able to see a nurse or dietician whenever I wanted.
so it's easy for you to continue in denial for many years, or what's probably more common, to dip in and out of it and have periods of control and then periods where you don't care again.
All I can say is do not underestimate retinopathy (I have no experience of other complicatons fortunately) it can become very aggressive very quickly (as in my case) and whilst a lot of the time laser can treat it, there can be cases such as mine where it doesn't respond to the laser. Even though I'd had a lot of laser, it was not enough to stop my eye bleeding from the inside. This is as nasty as it sounds, seeing drops of blood seep into your vision, a bit like someone getting a black pen and scrawling over your field of view. What was even nastier was when I went to a and e at the eye hospital and was basically told it wasn't an emergency and that I wouldn't be seen by my consultant for two weeks. By this point I could barely see out of the affected eye, and even if your other eye is ok, the bad eye obscures your vision with both open and it's difficult to go around with one eye shut if you're not used to it. So suddenly I couldn't see properly, couldn't work, couldn't drive etvc and I felt no one was taking it seriously (it is not an emergency to the nhs) and I had to spend a lot of money to get the op done privately as that was the only way I felt confident my eye would be fixed.
It was undoubtedly the worst experience of my life and I'm still a little scarred by it now to be honest - I don't think I will ever quite be the same person as before.
So that's what can happen - but my story will not necessarily stop you doing what you're doing - may make you think about it for a while but it would be easy for you to slip back into denial.
Have you thoughtt about seeing a counseller for help coming to terms with your diabetes and managing it? Some diabetes centres offer this, but due to cutbacks probably not many and if they did there may be a wait. if you really, really want to sort it out could you pay for counselling?
That's what I'd try and do in your situaiton, although I must admit I had counselling a few times and it didn't stop me for good. It's just too darn easy to put diabetes on the back burner. It's a full time job in itself!
But maybe you are in the right place to change now.