I think they would have their place with certain piece of lingerie, but as a whole we really don't have a strong opinion either way. As others have said, they have to be well designed to provide all the access, not rub or irritate.
I like crotchless panty hose and crotchless body stockings, but crotchless panties/thongs/gstring s all seem pointless; might as well avoid underwear all together.
I hate underwear as is so I am not going to buy some that does not have crotch. My husband is not fan of them either, I just do not get it. To each their own.
I've wanted to try a pair. I get kinda insecure about it though because I have slightly longer inner labia and I feel like I'd be paranoid about them popping out or something lol.
My husband loves them... he probably wants me to wear them every single day. I'll usually wear them to please him, but I don't really feel anything special about wearing them. Usually wear them with a mini skirt in the house and out about.
I've thought about getting them, but in the end I am a practical person. So wearing something that is impractical all day (or only putting them on right before sex) doesn't make much sense to me.