Agree with all said here - and Tom, thanks for capturing so clearly the 'lifestyle' bit. We were unusual on MDI in that our son's control was really quite good, esp for an adolescent. However, the pump has enabled MUCH finer control but as importantly, the liberation is worth every moment of commitment to pumping. I cannot stress enough the freedom my son now has in being with his friends and eating in restaurants, drawn out family meals etc. Yesterday for instance: in town with friends he guessed a bolus for a small ring doughnut out with friends. He then went back to a friend's where they made beans on toast - some of which he had to guess. He knows to guess on the low end when out and about. By 4pm he was 10 mmols - bit high, so he gave a little, painless correction dose to get in range.
He did what he wanted with no lows and no proper highs. As long as he tests and acts upon his tests, the trade off of 24/7 is control AND impressive flexibility.