People still use the radio a lot it seems, particularly in commutes to work. Again just aren't willing to set up month's worth of playlists to keep them interested as they drive... ah well.
I often have waves of finding new music like you, but less than weekly... I tend to obsess over a particular album or two until I become hyper-familiar with it and each little nuance before moving on... then returning back at a later date to repeat the joy =D
Nothing wrong with that at all. I'm in the opposite camp of you which is why I look for stuff weekly. I tend to just pick a few songs to obsess over for a week or so and then move on to another set. There are few albums that I'll actually listen to the entirety of.
Still, I do find it kinda weird people can't take the 10-20 minutes to make a playlist on Spotify or Google Play. I originally set mine up with, like, 80-90 songs in about 20 or so minutes and have just added on over time until now, where I'm at like 500+ songs. Can't even imagine using the radio these days, because it's literally just a loop of the same 20 songs per station. I need some fucking variety in my shit.