To be upset at how many people turned up to my dad's funeral in casual clothes?

[Wheelchairbarbie]

My dad died last month and the funeral was yesterday. It was an unexpected death and very very painful for us all to lose him.
I don't know if I'm wrong and I shouldn't be focusing on it but I can't stop thinking about how many people came to the funeral yesterday just dressed as though it was a random day in Tesco.
Women in strappy tops and tight, short dresses, men in jeans or jogging bottoms, some not even clean, trainers and flip flops everywhere, hair in messy buns, it was all there.
I felt so upset that they didn't seem to think him or we were worth the effort.
I've never seen funeral guests dressed like this. I've always put on a black dress, spent time over my make up, worn nice jewellery and heels, maybe even a pashmina and a hairpiece. I'm only 35?

AIBU to have found it so upsetting?

Sigh, I have no relatives or friends whose 'loved ones' will need my support at a funeral.

I do not own joggers, I don't know why you made that up.

If I wrote on invitations no presents please and someone decided "oh she doesn’t mean that, everyone knows you never turn up empty-handed" and ignored my request then they absolutely would be in the wrong.

If nothing is said then sure, follow the usual practice of bringing a present but in this example no presents was specifically requested.

So if you meet a man and you say “no” when he asks for sex, but he has sex anyway, because “no” actually means “yes”, then you can hardly complain!

As for a house party, it’s generally “from” not “at” a time, so it’s rather different.