This is very inconvenient for me. I only have one USB cable. I need it to charge me phone overnight next to me. Taking out the cable and sticking it in the back of my computer in the other room is a lot of hassle. For that reason I very rarely connect my phone to the computer. It's just so much easier to purchase, delete and redownload apps from my phone.
Out of curiosity do you have any music or videos that you purchased from your iPhone ? If so I certainly hope you don't do the same with them.