I dont understand. You can do both things, rip your own music in lossless for archival purposes and at the same time use an streaming service. There is no need to stop buying music.
In fact, with Apple Music, your own rips can coexist in the cloud along with the music from their catalogue.
The only caveat is that lossless files, when uploaded to the cloud, get transcoded on the fly to AAC 256 (your locally stored lossless files remains untouched on your computer). Hope this will change soon.