Welcome to the forum, general4legs.
Of course I get frustrated. Similar to you, I've been diagnosed about 20 years, and have no complications. Unlike you, I use MDI, not a pump. In fact, I think it's because I don't have a pump constantly attached that I can occasionally forget about my diabetes. For example, last night I drove to orienteering, and, as expected, met a friend and his son there, plus his wife, who'd brought son and compasses, as he'd cycled from work. Unexpectedly, family invited me to tea, so I drove son to house, while father cycled. Mother had already taken work kit home. While we orienteers rehydrated with water and squash, eldest daughter and 2 of her university friends were completing baking session, including using lots of bargain plums in a tray bake. They were also experimenting with cocktails. They had declined orienteering, but after their navigation error - they intended to visit Bronte Parsonage in Haworth, but didn't check where sat nav was taking them, and ended up in Batley and Barnsley, crossing the border into SOUTH Yorkshire! - they would have benefitted from use of paper maps. All of us older adults wondered why they didn't look at road atlas in car. So, a lovely bonus of great banter over a meal of chilli con carne, follwoed by chocolate cke and plum cake - had to to have a small piece of each 🙂