I think that it may be related for some Aspies...
EX: in my family there is me, my cousin, and my grandmother.
Me:
- aspie, ADD, anxiety, slight OCD
- I do it because I don't like contact with people, I eat the same foods, I wear the same clothes, and it makes me happy to see that I am set for a while.
My grandmother:
- aspie, ADHD, OCD
- has the *stereotyped* Aspie mindset where she is set in her own ways and is always right, so dealing with sales people or workers at a register is impossible; plus with ADHD she gets overwhelmed. she likes online shopping. when she buys in bulk, or when we go and buy 5 tons (10,000 pounds) of horse hay at once she says "it makes me feel safe". (and then she giggles and says "and it makes me feel wealthy when I have this much _____!!" for whatever she got). she will find clothes that she likes then will buy the same thing in bulk.
My cousin:
- aspie, ADD, possible OCD
- he wears the same clothes, he is a very particular (but not picky) eater, he gets frustrated by other people a lot.
ALL of us:
- IDEALLY will just build up a collection to avoid things we know will upset us
- knowing that we have our "stockpile" makes us all heppy
- our stockpile is things we know we LIKE and will be HAPPY with. (we all hate the "mystery" of going to the store and trying on all he clothes or trying a bunch food just to find ONE thing we are happy with and get multiples; it is much easier to stick to what we know and like. plus is seems we all have sensory/touch issues, so...)