Slightly O/T, but has anyone noticed a trend that woman are having baby showers for each baby these days? When did that start? A baby shower is meant to help the new mom and dad set up and have the necessities for a baby. Unless 10 years or more have passed, there should be no need for a baby shower after each kid.

I have seen this for many years, and not only each child but multiple showers for each child .... friends group, Mom's friends group, work group .....
I had no bridal showers, and no showers for my first two (boys). My sister demanded I have one for baby three because it was a girl and she felt I needed pink stuff. I allowed it with only about 12 very close people because I needed nothing but maybe a few pink outfits. My reasoning is the expectation by most I've ever known consider the shower gift ... a "pre-gift" and at wedding or birth another gift is expected to follow. This bothers me.
Yes, I consider it my gift. If I've attended a shower, I will not give something else once the baby is born although customarily here showers are held after the arrival. If there hasn't been a shower or I've not been invited, I'll make sure my gift gets to the family at some point.
It's not uncommon here nor is it seen as a breech of etiquette. A shower is a celebration of new baby by people who love the family. What's the problem? Do you ever give a baby gift to friends or family members when #2, #3 or whatever arrives? Instead would you just think "I gave them something for their first; they can just re-use that."?
See I consider a shower gift the baby gift as well, or like you I deliver after ............. but most I have been around for decades don't follow that thought. They expect two gifts. So to go to repeated showers for each kid also means multiple gifts for each kid. And by baby 2, 3 they really don't need much except for diaper supplies or a few outfits.
Basically just another way to get more gifts out of people. Its where you bring diapers and you get a raffle ticket in exchange for the diapers and you can get picked to win some lame prize.
So like the lottery, if I don't want the prize I don't have to buy the ticket so ........ diapers are totally optional ... I'm okay with that if it's clear it's a "game of chance" if you want to play.
I asked for books. I had purchased myself all the things I needed. I had lost a pregnancy at 20 weeks before my last one so I had a few pregnancies to collect things.
Now I do love the idea of a themed shower that is to provide a specific type of item that would be remembered later as special - and the event can be totally planned around it ~ "Build a Library" is a great idea.
Why the word demand? And the guest of honor doesn’t ask for anything because she is not hosting the shower. The book thing is just a suggestion, and the wording lets folks know it can be used, so actually cheaper than a card. I’d have no problem not even bringing a book and just using a gift tag if I didn’t get around to finding one.
The invites I have received made it a very prominent request. A gift from registry and a book with a message inside were expected. They were not worded that it was just a sweet add on if you want .... I was instructed what I was to bring. My DS was invited to a couple shower where he was told exactly what to go buy ... he declined the invite. I feel like the event of celebrating something has taken a back seat to the gifts ... and that is sad.
QUESTION: Has anyone encountered this at showers ............. when you arrive you place your gift in "the spot" which is normal but then you go to a table and fill out your own thank you note and address the envelope? I mean it explains why I haven't gotten thank yous at several weddings .... I guess I never saw the table to send it to myself.