Interesting, I feel the same way about the past and Si.
Well I enjoy future thinking if it is a speculation of some fictional, 'probably-not-gunna-happen' nature. Actually I do occasionally get extremely energised by thinking about future advances and things I wish to achieve in the future, but they are nearly always fairly short term.
Anything longer and I see divergent pathways, many fatalistic, although one or two are of a positive and interesting nature. On the subject of fatalistic, I am ever annoyed by my mothers overly conservationist mentality.
She acts as if not maintaining certain standards or routines will result in a breakdown of the universe and the death of the human race by a giant indescribable monster with the face of Michael Barrymore....ok I added that last bit. But the other day she moaned and claimed we would start being fined by the recycling committee of the local council because I.......PUT.....ONE.....PLASTIC.....CONTAINER......IN THE BIN.....AS OPPOSED.....TO.....THE......RECYCLING.....BOX!!!
However I realise this is somewhat of a projection of my own fatalistic thinking, which I may or may not have picked up from her.
Personally ive been developing a view that young SJ types, especially the extraverted ones, are extremely subject to their environment, so much so that an SJ from one generation will have completely different standards and opinions when compared to those SJ's of a different generation.
Of course this could easily be applied to ANY type at ANY time. However the difference is that whole ' Si = upholding traditions' idea that many people seem to have, one which ive tried to dispel for a while but instead have given up on, so instead let us pretend that I accept such a premise as true.
If this is the case then the perceptions of Si will be filtered through the framework evaluations of Fe and Te into an upholding + conservation of whatever system or tradition or 'insert context here' they happen to have been brought up with and which happens to have left the biggest impression as is Si's main component.
Thus my idea of conservation is different to that of my mum's, I have been brought up in an age of 'enlightenment', (har-de-har), an age where the values are far removed and different from those of my mothers age, therefore I am more likely to find myself upholding things which will not be considered 'SJ' because most people have trouble looking past the locked doors of what they have been told something is. For example I value individuality and creativity, because ironically that is what everyone is being raised and encouraged to value. I value difference as well as similarity, because that is what we are being raised to value...see the pattern?
Ive never understood the rather shortsighted view of people such as David 'what a cunt' Keirsey who seems to put forth the idea, (indirectly), that being of an SJ temperament or type immediately sends your mind back into an alternate timeline of standards called '1950's America'.
In any case to me; it is all about context.