Earlier quoted context omitted.
This is why I don't use WhatsApp despite the fact I know many people who use it. To use the app, you have to give access to your entire contacts list. Even if I'm okay with them having my information, I don't feel comfortable consenting for those in my contacts list who don't use WhatsApp.
You don't have to give the app access to your contacts... at least on iOS. That's what I do. It would be impossible to communicate with friends and family otherwise. I just have to put a little more effort into figuring out who's texting or calling me. The app also still shows me people's (self assigned) nicknames in group-chats. My only gripe is that I still have to give the app access to my photos. I wish there was…
If you want to share a photo you just have to leave the WhatsApp app and start the sharing from the Photos app and select WhatsApp as the target.