You probably don't want to stay on a soft diet for ever so at some point you're going to have to go back to eating your normal food. My recommendation would be to try it carefully, I'd be prepared for it to be a lousy experience though and have a back up plan in case you run in to any difficulties swallowing your first choice meal. Don't force things!
You don't want to skimp on food after an operation because that can mess up your healing, getting back to your usual routine as soon as possible is the best thing.