pumps scared the heck out of me too. The first one I saw was in the 1980’s and I just said, “No, thank you”. Went on with my daily injections for 20+ more years. The infusion needle looked like a railroad spike to me, and so for a long time, injections were “easier” than the pump.
there’s a good and a bad to everything. Like others said, it’s more what fits your life. It turns out for me that pumping was better for a completely unpredictable lifestyle, skipping meals and multiple time zones when I travel, weeks where I sit and weeks where I am super active at work. I am stubborn so it took a long time. Today, pumping is right for me.
new pumps are easily detached, some are rated as completely waterproof. some just stick to you like a hockey puck, all manufacturers will let you see and some even let you try but they are all the same in concept.
if you like to read, “think like a pancreas” and “Pumping insulin” are 2 great resources and may give you the technical information you are looking for.