This is a great question! Thank you for asking and not making assumptions. I have been T2 for 4 and a half years.
For me the worst thing about having T2 is the judgement of others that I brought it on myself by being lazy and eating sweets all day. I have battled with my weight for 30+ years. I have been told by a GP that being fat is a lifestyle choice. Really? I don't remember waking up one day and saying "I wish I was a size 28, where's the cakes?!"

10 years ago my health started to suffer because of my weight. I went to my GP, she gave me 2 useless diets ( I put on 8 pounds in 2 weeks doing the GI diet that she recommended). Then I went to a nutritionist. Then a naturopath. The naturopath helped me a little with my thyroid and liver, but then she left to have a baby. I slowly stumbled across a lower carb way of eating on my own after that.
Last week I went to a new naturopath (practices Ayurvedic medicine amongst other things) and she told me I have adrenal fatigue and that is why I got so fat and can't lose weight. A friend here gave me a link to a site about it, and yes that all makes sense. There were pictures of the body shape of folks with adrenal problems. Yep that's me.
Sitting in a café yesterday I watched the people walking by. Several had my body shape. We have an obesity epidemic here and the obese themselves are being blamed for it. We are a drain on the NHS we are told. That's the not way I see it. The NHS has let us down. We are forced to go to alternative practitioners for help if we can afford it, if we can't then there's advice on forums like this one. How ridiculous is that? We pay our taxes and NI contributions like everyone else, yet we aren't given the diagnoses that would help us to lose weight. Instead we are told to cut down on sugar and fats and cut calories. That simply doesn't work for everyone! It's that advice that saw me end up morbidly obese. We need to know why we are fat and then we can take steps to help ourselves. It's not always a case of overeating and under exercising, in fact over exercising can cause weight gain too if you have hormonal problems as it increases stress on the body and causes the adrenal glands to go into overload.
Yes you are right. T2 causes insulin resistance which makes weight loss difficult (impossible even when you add the fact that other hormones might be out of kilter too, not just insulin. )
So I don't eat the high carb foods - sugar, flour, bread, rice, pasta, potatoes and most fruits. That's OK it helps me control T2 without drugs. It's not usually a problem and if I slip up very occasionally it's not too drastic.
I would prefer not to be T2, but I would rather be T2 than T1 because I didn't become T2 until I was 53 and I had therefore had my children already so I didn't have the added problems of being pregnant with diabetes. Also I had had all of those years without an official label of T2, but really for me, it started way back in my 30s when I started to put on weight and could no longer control it.