Why can't I see life in multi-colours?

My sis goes up into the mountains and waxes lyrical!Poetry
sprouts from her heart and mind like streams in the early spring!
I am down in the plains and see everything in monochrome.
My son blogs and sees the funny side of life!
I blog and all I do (so I have been told!) is whine and whinge.
So do they see a half full bottle? And I see it as half-empty?
And I have always been considered the optimist with the Cheshire
cat grin an my face... 24/7!
So what happened? Where did my groove go?
I often wonder, as the auto drivers navigate their way full pelt
down the madness and mayhem that stand for roads in Delhi, why
I can't see what the gushing tourist sees...
They see colour and vibrance and energy and life...
I see crazy people crossing roads with nary a thought for the
traffic bearing down on them... risking their lives and others!
They see exotic "holy cows" and I see dirty bovines that are
hazards to life and limb.
They see a maelstrom of buildings, old and new; age old heritage
and culture living cheek by jowl with modernity and high tech;
they see every conceivable mode of transport adding a touch
of ethnic pride and Indian ingenuity to everyday life.
I see crumbling ruins badly in need of make-overs, electrical
connections that are death traps,dirt and garbage that only
breed disease and death and people who are all out to make a buck
by any means possible regardless of the morals involved.
So why is it I can't see life the way I used to? Full of dreams,
promises and endless possibilities? Why?
Dare I say it? Am I actually getting old?????