How is having any song you want being one search away less convenient than having to curate and organize a music collection, and then go digging though folders to find the song you want?

Look, I've been collecting music since 1998 and even I admit that streaming is a lot more convenient. Only reason why I still collect music is because I am a DJ and don't always have a reliable wifi or data connection at every gig. But even then I've culled the vast majority of 50k+ tunes down to about a 1000 of the best and most popular on the dance floor. Then swap songs in and out as needed. The modern era makes it easy to re-obtain a deleted track, and often in higher quality than I originally ripped it at (I use a spectrum analyzer on my collection to verify).