I think it's a shame of having to choose between T and F. Does the T side handle the emotions adequately, and is it fun and ethical? Does the F side handle thinking adequately, and is it consistent and logical?
I have sometimes been unsure of my preference, thinking that I'm in the middle. Then seeing NT vs NF forums has been the deciding factor, as NF topics have seemed ok and lovely, they are not such topics that I think constantly about.
Also when going too deep in the NF terrain I feel sometimes coming across as ridiculous and hurt. NT feelinglessness is kind of dull emotionally and leaves much to be desired, but NT type intellectual goals are damned great to do, and they work better for me than NF things.
Have you been uncertain of your preference on the T/F scale and what made you decide which one you are?