I'm a T2 on insulin and resisted the medics suggestion for me to start on it after I totally lost control of my BG after a period of illness. I battled for about 2 years thinking I could manage it myself and with meds, but once I started on it I felt better within a week or two and the fog created by all the meds (that weren't working anyway) just vanished. Frankly, I wish I hadn't been so stubborn and had started sooner. The DN said "if we'd known just how well you'd do on it, we would have insisted too."
I'm just starting a new regime as I'd lost weight and improved enough that what I was doing wasn't working well for me any more for long term maintenance, but apart from that, I'm much happier on it than I ever was on medication.
As urbanracer says, why does it concern you? You'll get training in how to inject - my DN had a pad you strap on to practice injecting into with water and I got to handle pens and needles and wasn't sent off with it until I was totally happy I knew what I was doing.
Ask questions and we'll be happy to answer.