Why don't I reminisce much?

Whenever I see my friends and relatives reminiscing their good old days, I always wonder why I reminisce so little myself. It's not that I haven't had a happy childhood or college days - I did. But, somehow, I tend to think very little of the past. And, I do wonder whether it is to my own detriment! Any how, the rest of the this post shares some of my thoughts on this topic.

I am a person who lives in the present - not in the future; not in the past; but, always in the spur of the moment. Sure, I do think of the cherished past occasionally. Whenever bright sunlight warms my skin on a mild wintry day, I am immediately reminded of the walks I used to have during lunchtime in winter in the green paddy fields behind Town Highschool in Gudivada. I do frequently bring up my childhood experiences in conversations, but those recountings rarely have a touch of nostalgia. By and large, my trips down the memory lane tend to be brief sojourns rather than soul searching voyages.

What are your thoughts?

I intended the next paragraph to be the introductory one. But, I don't believe it makes much sense any more. I have decided not to drop it because it did flow fluently from my keyboard, and it does sort of make me look smart in a post-modernist obscurantist way ;)

I know that I am a sentient being in one sense - consciously perceiving the stream of reality around me. But, if a sentinent being is expected to perceive reality spread on a temporal scale, reminiscing fond memories then I am afraid I barely pass that test.