It's another opportunity for friends, family and loved one's to get together and have a happy time. there will be cakes, fizz, cups of tea and fun.
If you don't want to go, don't go. But, why shouldn't people have a bit of light hearted fun if they want to. Of the young parents we know, one group who love to celebrate anything, go for gender reveal parties. The other group feel a bit anxious about too much celebrating before the baby arrives safely. Live n let live. There's so much stress and angst around currently, a bit of what you fancy can't be all bad.
Lack of public toilets in towns.
Passports not in the drawer I always keep them in. Turning the place upside down.