I never thought about it like that. I've always considered it inconvenient to not have my order details in my email history when I do a search of all emails looking for when I bought a thing or something. Especially if I dont remember where or what.

I do appreciate the privacy that can come with that. However I think I still prefer being able to search my email history for receipts and other info. Or at least opt into receipt coming in email.

I'm too lazy to catalog things manually but I do on occasion want to search for things a little easier.