I think it's that worry that you won't be able to have what you want after....while this is true for the recovery stage, most banders are suprised how much they can eat after the swelling goes down.
I definately assumed I would not even feel hungry so I got a rude awakening!!
You can eat your old fave foods, but until restriction , make sure you have them in moderation (eg on treat day) and when you have your restriction right, you should be satisfied with a much smaller portion of what you like.
There will be foods that you may not be able to tolerate after, but in all honesty, you probably will be so pleased with the weight loss and so looking forward to other fun things in life that being slim opens up for you, that food is no longer the centre of every day for you.