And FYI, I answer the same way you do when asked about interior decorating. Just as my Father would answer when asked what restaurant he would like to go to for his birthday: "Eh. Anyone will do, just pick one for me."
I'm not sure why you are trying to force yourself to FEEL and get all emotional. No wonder why you end up becoming more depressed and drained. The key to dealing with illusionary emotions is to pretend they don't exist at all.
My solution to you would be to take out that underworked Fi of yours, sit down with it and try to understand the reason behind your reactions to all these sensory stimulation. You shouldn't expect to come out of it with a bleeding heart, instead your goal here should be an in depth awareness of what you feel and why you feel that way- in other words get in touch with your Fi to such a level where you won't become confused/misdirected when other people tell you what you should feel/what you aren't feeling.
For a Thinker I know feelings are like poison to the soul yadayada, but look at what happens when you are out of touch with your Fi: Your AUNT has to tell you what you are feeling, you get confused when people tell you that you should be feeling this but you don't- basically you have no idea what you're feeling and rely on others as a crutch. It is much healthier for you to build up that connection to Fi, no matter how irritating/tiring it is and knowing yourself better than to attempt to become something you are not.