@Zaphod do you realise that the Sex Pistols Pretty Vacant will be very old fashioned music by the time you die? It would be like someone playing Glenn Miller in the 1990's 
Anyhoo, I am kind of with the OP and most others, but I do disagree with the funeral plans bit. I think it's selfish to say 'I will be dead so I won't care' because you are ultimately leaving your loved ones with the financial burden of your funeral, that can run into the middle 4 figures (4 grand-ish..) And THAT is for a 'basic' one.
Unless you want the council to give you a 'paupers' funeral. If so, you will get incinerated with dozens of other people, your family won't know when it will happen, they won't be allowed there anyway, they won't be allowed the ashes from the cremation, and there will be no grave or resting place.
If you DON'T want to pay into a funeral plan (and they are a bit expensive,) then at LEAST put 3 or 4 grand away, so your family doesn't have to suffer the financial burden!
I ALSO get sick of the over 50's ads though. As someone said earlier, many people are at LEAST 70 on the 'over 50's ads.' I am just gone 50, and don't look 21, but (like many people around my age,) I don't look any older than my age. I certainly do not look 70 with silver hair, beige slacks and a pinny! And I don't sit there knitting and listening to Jim Reeves!
I have (most of) my own teeth, I am only just starting to go a tiny bit grey at the temples (and it's not noticeable coz I am blonde!), I don't pee when I cough, sneeze, or laugh, I cycle and swim and go for long walks, and on holiday abroad once a year with my husband.
I also love current music (Ed Sheeran, Taylor Swift, Lana DelRey, Little Mix, Justin Bieber, Camilla Cabello, George Ezra, Adele,) and also early noughties stuff too (as well as stuff from my childhood which was the 1970's not the fucking second world war!) 
Me and my husband laugh when we see over 50's cruises, and adverts for other things over 50's NEED....., you know, like denture glue, beds that help you get out of bed, walking frames, tena pads, baths with doors in them, plastic surgery, (coz we all want to try to look 21 at 50 don't we?!) 
) What makes us laugh is the 1920's & 1930's music playing, like Great Gatsby! It was nearly the 1970's when some people in their early to mid 50's were born FFS!
Oh and I am NOT a babyboomer! I am Generation X!
Finally, I disagree that many people in their 50's have primary school children. Some do sure, but as a few people have said upthread, it is 'not the norm.' I certainly agree that if you are around 50, it's fairly common to not have grandchildren, but it IS fairly UNcommon to have small children at 50.
I can count on the fingers of one hand, the amount of women I have ever known - or met - who have had kids over the age of 43-44. And I have only known ONE have one at 48. By IVF actually. She is 50 now and said she actually regrets it as it's killing her. She said it's SUCH hard work, and she never sleeps, and she has no energy.
She already had 2 in her early 20's (who have kids themselves now!) but she had one because her new boyfriend (10 years younger than her) wanted one. He is 40, he has a very hectic professional career, he is rarely home, and she is doing it all almost entirely by herself.
By the time her baby is in their mid to late teens, she will be an elderly woman. I don't envy her at all. And to be honest, I do feel a bit sorry for the child. When they start school, everyone will think she is their grandmother! They can't NOT think it really!
Have to admit, hell would have had to freeze over before I would have had a baby over the age of 40. Had mine in my mid to late 20's and wouldn't change a thing. I know some people say 'we can still do everything people do without babies - even with a baby/toddler in tow,) but you really can't.
MN really is a parallel universe sometimes, as there seems to be SO many people on here claiming to know lots of women having babies at 45-50. Yet IRL, I have known 2 in 50-odd years. The one who had IVF and had her baby the year before last, and one who had one at 47 - natural conception, and the baby had lots of issues that I won't go into on here.
Suffice to say though, (re the one who had a baby at 47- by natural conception,) that it aged the woman by 10 years within the first year of the baby's life, and made her quite ill, and her husband (the baby's father) left her (and the child) when the child was 3, as he couldn't take anymore, and she was left to cope alone.