I don't want to get old

Am I getting old
Please tell me this is not so
I think I'd rather it be Parkinson's 
That's giving me this glow
I expect my hand to tremor
And struggle to always grip
And it's sort of required
That i falter and i trip
This is all my illness
I reassure myself everyday 
They grey hairs a coincidence 
And carefully hid away 
The fact my memories poor
Is I have to much to do 
And it's because i have Parkinson's 
I've become obsessed about when I poo
I can be outspoken 
And say exactly what I want 
I get away with swearing 
And calling everyone a nnoying 
My weight is creeping up
Oh well there's nothing to worry about
Now because I get the tremors 
There no need to work out
My memories getting sketchy 
And It's very poor at best
But that's because I'm ill
And not getting my proper rest
Another plus is my disabled badge, there's another illness for that
I can't walk far and i need my car as my knees are basically crap
Oh and there's another bonus
I know this will sound bizarre
But having the shakes is
a brilliant excuse to wearing a bra
Being ill is a good reason
to always act the fool
Than being old and wrinkly 
Which is somehow not so cool.
I have a chronic illness 
It no good crying and being dull
The glass is only half empty 
because my tremors stop it staying full
Alright I'm nearly finished 
you'll hear no more from me
Another downside to having Parkinson's 
I got to go quick before I pee