I have been a diabetic for 26 years.
Four years ago I decided to try the pump. I thought it would make things easier.
Before I took lantus - which provided a nice basal coverage - so if I did nothing, I was in balance. And then I took Humalog or whatever to cover the bolus I just ate food things.
When you switch to the pump - you lose the basal lantus - and are dependent on the constant delivery of the machine.
For me - the first year or two were great - I loved the pump. Push a few buttons and get extra insulin for meals - very very cool.
The downside for me was if a site failed - if a put in a new canula and it did not work - it would take a few hours to find out. And of course - it was numbers in the 200s and 300s that would alert me to the trouble.
On the whole, having a tube stuck in you for three days creates scar tissue.
And over a few years, you end up with lots of scar tissue.
Somehow, some manage to rotate sites enough that this is never an issue.
For me, it was an issue. I could not get consistent, reliable insulin delivery.
After 26 years, one thing is paramount to me. Keeping my sugars low. A1C in the 5 range.
So having multiple site failures was unacceptable.
MDI for me worked. I went back. While I like the idea of the pump, it did not provide consistent enough results for me to depend on it.