Gotta be honest, the way I currently am, I don't think I can imagine a world without Vocaloid.
My first experience with Vocaloid was back in 2012, only listening to popular songs featuring Miku but it isn't later when I found out about that there are games featuring her and other Vocaloids, giving me the chance to listen to the others. It really opened up my world of music apart from just listening to rock, metal and pop all the time, I only have a short list of bands I listen to. Fast forward to today and am still listening to Vocaloid songs, literally, I'd say about 80% of my music player is filled mostly with Vocaloid songs.
I'm just grateful that Vocaloid wasn't a passing fad when it first came out and continued to grow and hopefully will continue to grow in the future.