@maxdancona,
It really depends on how good your streaming game is. Mine is pretty weak. I think about it occasionally, but don't ever commit to spending the time to curate my play lists. I use XM to hear the current stuff and I have a serious jam list on my phone for when I want to put the top down. Just me personally, I'd never hear anything new without radio/XM. I know there are default streaming playlists that would do that, but to me it's worth the ease of jumping between current hits, 70's, and classic rock with the push of a button. That's why they give you a free trial.