I've been using insulin for about a year and I hate it. Maybe I'm not doing it right, but this morning I injected four units of rapid bolus (my fasting BG was 9.4) and forty minutes later it had actually gone up to 10.4. I hadn't eaten anything. This happens frequently.
Another issue is that my BG meter (Accucheck compact plus) often shows wildly fluctuating results: My BG might show as 7.6 one minute and, if I check again immediately, the very next minute as 10.5. I have to check three times and take the mean, since there is a lot of difference between the bolus needed for a BG of 7.6 and one of 10.4. This gets painful and expensive.
I am injecting it in a semi-circle just under my navel, and never on my thighs or upper arms.
I hate the fact that insulin's main job is to store fat, and think that since I am T2, I am just making the situation worse by using it. But I have had a liver transplant and cannot use some of the newer and promising drugs.
The insulin, strips and needles are expensive and using it is inconvenient and often painful.
Another problem is that I often forget to take it prior to a meal; so I am often halfway through or finished a meal before I remember, if I remember at all.
Nevertheless, between insulin and some of the older orals that flog the overworked pancreas to produce more insulin, injected insulin wins hands down. That said, I think the use of insulin for T2 is really the last option.