I'm 49 this month.
Went to a HIIT class at the gym this morning and nearly walked out during the warm-up in a peri-menopausal strop. I was the oldest in the class by a good 20 years so the only one who has to worry about fucking up my decrepit knees if we bunny jump up and down the track. FFS! Takes a good 20 mins for my old joints to warm up. If the knees aren't hurting, my lower back is or my wrist. There's always something bloody hurting.
My hair has always been fine but now it's also thinning in patches (stress at work caused a lot of hair loss and it's never really recovered). I hate my hair. It makes me feel so old.
I don't have many wrinkles (one of the few advantages after a lifetime of putting up with really oily skin) but the jowls have started. I was out wearing a beanie today (because of the wind) and it just emphasised the jowls even more.
No chin hairs though but maybe that's because I'm so lacking in hair generally.
I do quite a lot of exercise so my body is in pretty decent shape but nothing can stop the boobs sagging. And don't get me started on jowls again. 
I put hand cream on every night before bed in an effort to stop my hands giving my age away. I also moisturise my body daily but I still have some thread veins that have appeared on the back of my thighs. Grr!
I stopped wearing heels 10 years ago. I used to wear them all the time but the balls of my feet started burning so much (and so quickly) as the skin got thinner.
I take Tamoxifen (for breast canver prevention as I'm high risk) and when I started I was told that one of the side effects was mood swings. I didn't think it was possible for anything to make me more grumpy. I was wrong.
I just blame everything on being old.
I have varifocal glasses and multifocal contacts but I get so fed up of squinting at small prints on bottles etc . Took me a while to realise that the world hadn't gone mad and decreased font size globally. It seems I'm the problem rather than the font size.
But what I do like about being older is the confidence. Definitely the silver lining in the cloud of ageing.