Connecting to iTunes on a weekly bases is just common sense. It backs up all your files keeps your phones contents up to date. This had nothing to do with your phone going into recovery mode, my brother didint back his phone up for a year (honestly) and his phone still worked as well as the day he bought it. I finally forced him to do it and it took about 15 minutes for his phone to transfer all the data he had stored on the phone back to his computer he had so much on it. I would back mine up a few times a week.
IPhones only enter recovery mode if there is (a) a problem with the phone or (b) you put the phone in recovery mode on purpose.
If it happens regularaly then I would get it checked out by Apple.