Been using SoundCloud for years, it does exactly what it is supposed to very efficiently , I do think they charge a bit too much for the SoundCloud plus, but i still am using it, so there is that. Overall though, i think we would be lost without SoundCloud, Its became extremely vital to independent artist releases, such as bandcamp.
Superior algorithms + less ads than Spotify = SoundCloud forever (seriously, the auto-play never gets reckless, you can leave it playing forever it's that good)
Unique community and great platform for up and coming artists. Sound Cloud holds mixes and relevant music in ways that YouTube and traditional streaming platforms do not.