I have had my pump for 2 years.
I resisted it for many years. I guess there were two reasons: I couldn't understand why it could provide better control and I didn't want to be forever connected.
It provides much better control by being able to adjust my basal throughout the day. This is fantastic: long acting insulin assumes our basal needs are the same 24 hours a day and does not take into consideration variations such as dawn phenomenon. However, the biggest benefit by far is exercising, which I do 5 or 6 days a week. I am able to reduce my basal before running or increase it before climbing allowing me to run further without hypoing, climb harder routes because my BG does not rocket too high and lift heavier weights at the gym.
However, I still don't like being connected all the time. I am slim and have not found a good place to keep my pump out of sight but yet easy to access to dial up a bolus dose (or adjust my basal). Therefore, I find it harder to "hide" that I have diabetes. I am not assumed of it but I don't want to be judged for having it or be treated differently because of it.
And, being slim, I have little padding so sometimes get bruises on my hip bone where my pump usually sits.
Weighing up the two things (extra control and bulky pump), I think the discomfort is worth the control.
In an ideal world I would prefer a smaller pump or one with a remote control (such as an Omnipod) but this is not available in my area.