I tried that method for years. While it made me a little more fit overall it just wore me out. Then, my body/mind automatically started raising my cadence to compensate for always tired muscles. I then thought that I must be a spinner and got really really good cardio and could ride a high average speed but could not improve or push beyond that and was actually going backwards and losing strength on the bike.

Fast forward, I get a powermeter and focus on making power. I do hills once a week, mix in a few recovery days with slow rides, easy rides, pleasure rides, sprint intervals, etc...really only crush my legs once or twice a week and now I make more power than ever.

Bottom line, hammering every ride does not work out. After over training like that, I could not even get my heart rate past 180 no matter how hard I tried. Now, I am back to myself and give my body appropriate training and rest and I can again get to higher heart rate ceiling. Ride smarter, not harder.