Whoa - I am absolutely gobsmacked by this thread!
I've only just begun to admit some of this stuff to my therapist, and I have to say, it has brought a tear to my eye to read all of your experiences here. Both in the sense of living like a hermit, and being averse to asking for help with anything, so much of what you have all written is eerily familiar.
My primary avoidance strategy is the cover of night - I become almost nocturnal given the choice. I know that I've done it since childhood. Not that I dislike sunshine, but even as a kid the night-time was "my time". I developed an array of techniques to get away with being up late reading and playing with my Lego almost silently so that my parents and brother would not hear. I memorised where every single creaky floorboard in the house was too - so that I could slink about like a ninja without drawing attention. All so that I could do my own thing without interruption or interaction - blissful!
And I still do it - when there's a knock at the door, or the phone rings, I go into "stealth mode" - bated breath, frozen to the spot, tuned-in to even the slightest indication that the person disturbing me is still there - until I can be absolutely sure they have gone away. Then it's safe - I can breathe again, pace and stim for a while to calm down, then get back to whatever I was doing. So I still prefer the night-time. When all of the other people are tucked up in bed, I can be free to indulge my interests knowing that I won't be disturbed, and it is still blissful.
My ability to creep about almost silently has even been noticed by other people later in life - I've been called things like a "genie" many times in the past for my uncanny ability to "magically appear" beside people without them noticing how I got there (maybe I was a cat in a past life - I'm sure any cat owner knows exactly what I mean!)
_________________
When you are fighting an invisible monster, first throw a bucket of paint over it.