I never really was lonely. At least not untill I started listening to the sentimental Fe non-sense which evoked many of the repressed emotional impulses I had stored and deluded me into believing that I had all kinds of strange emotional needs/problems that don't apply.
I don't have a need to connect with others on a deep level, and when I do, I easily get overwhelmed and am forced to abandon the relationship altogether. I do need to stay in touch with the external world. I won't get lonely, but then I'll lose my Intuitive touch and forget how to interact with the world, and in effect my competence will be undermined. Introverts shouldn't get lonely and those of you who do, attribute that only to the poverty of your inner life. You havent learned how to make company within yourself.
This does not mean isolate yourself when you manage that, because you still need the external world to be a sound person, only through attunement with the external world could you find a sense of inner balance, as much of our energy, by temperament is meant to be directed outwards. Though dont focus too much on the external world, you'll lose grasp of your inner self and then will star believing all of those clumsy fairy tales that extroverts tell you that if you dont have enough company you'll become lonely. And this will happen to you when you embrace what they tell you, it will become a self-fulfilling prophecy as you will try to live like an extrovert and cut yourself off from your inner resources which are vital. More important than anything you will find in this world.
Maybe those of you who are lonely aren't just because you havent developed your inner life, its just that Es have deprived you of accessing it to the extent that you need to in order to function properly.