Flawed and Fabulous

I'm looking at sixty in the rear-view mirror,
I drink milk right out of the carton.
Nonetheless, my dear,
I consider myself a bargain.

My new hip seems to work just fine
most of the time, and my dental work is paid for.
Got a few miles on this heart of mine,
but she's open and you'd adore her.

My hair is more salt than pepper these days,
And I don't have all original parts,
But I'm better than ever in most every way,
Except those annoying farts.

Still, I try to keep that at a minimum,
and I'm working real hard to control it.
Probiotics are helping, but then again,
there's always something - you just gotta roll with it.

I'm built more for comfort than for speed,
that train has left the station.
But this old engine's still got steam;
we're on track, we're just not racin'.

So when you wonder about us old girls,
we're yet among the living.
Should you desire to give us a whirl,
remember: we're not grateful,
we're just more forgiving.